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Manual Retract vs. Auto Retract Box CutterSlice Industrial

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Slice - 10400 Box Cutter, 3 Position Manual Button with Ceramic Blade, Locking blade

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6,595 ratings

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Size: 10400

Color: Locking Blade

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Purchase options and add-ons

Material	Bamboo
Brand	Slice
Color	Locking Blade
Item Length	6.97 Inches
Handle Material	Glass Filled Nylon
Blade Material	Ceramic
Item Weight	96 Grams
Blade Length	0.3 Inches
Style	Manual,Simple
Handle Type	Manual-Retractable

About this item

3-position manual slider button allows blade to stay locked in 3 positions (fully extended blade, semi-protruding blade, fully hidden blade)
zirconium oxide ceramic blade with rounded tip for safety = non-conductive, anti-magnetic, never rusts, chemically inert (no oil coatings) + stays sharp up to 10x longer than steel blades
1 slice ceramic blade = up to 20 metal blades = less blade changes = less downtime = less injuries + simple no tool blade change (replacement sku# 10404 or 10408)
ceramic blade only protrudes 1/2" - designed primarily for cutting corrugated packaging, foam, vinyl, boxes, cardboard, etc
to cut paper and thinner items please try the slice 00116 precision cutter or 00100 safety cutter or use the pointed blades 10408
innovative box cutter
stylish, durable, and safer to use than traditional utility knives

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From the manufacturer

i love how the blade is only long enough to open the boxes

sadasslice box cutter ceramic warehouse home work safety osha

	Slice 10404 Replacement tools - Round Tip	Slice 10408 Replacement Tools - Pointed Tip	Slice 10513 Pen Cutter	Slice 10514 Mini Box Cutter	Slice 10550 Utility Knife	Slice 10585 Manual Carton Cutter
			Buying Options
Customer Reviews	1,498	1,498	—	6,685	400	1,045
Price	$121.56	$18.42	— no data	$8.42	$21.84	$9.49
Compatible With	#10512 / #10513 Pen Cutters, #10475 / #10476 Slim Pen Cutters, #10514 / #10515 Mini Cutters, #10400 / #10503 Box Cutters, #10495 EDC	#10512 / #10513 Pen Cutters, #10475 / #10476 Slim Pen Cutters, #10514 / #10515 Mini Cutters, #10400 / #10503 Box Cutters, #10495 EDC	10404, 10408	10404, 10408	10404, 10408	10404, 10408

From the brand

Slice was founded in 2008 by TJ Scimone. Always looking for new ideas, he collaborated with renowned designers to reimagine everyday cutting products, making them safer and easier to use. Scimone founded Slice as a way to help fund long-term care for his autistic son. One percent of all Slice sales are donated to autism research.
Slice - Safer Cutting Tools

Product information

Technical Details

Material	‎Bamboo
Brand	‎Slice
Color	‎Locking Blade
Item Length	‎6.97 Inches
Handle Material	‎Glass Filled Nylon
Blade Material	‎Ceramic
Item Weight	‎96 Grams
Blade Length	‎0.3 Inches
Style	‎Manual,Simple
Handle Type	‎Manual-Retractable
Handle Length	‎6.97 Inches
Manufacturer	‎Slice Industrial
UPC	‎638084796498 895142104002
Global Trade Identification Number	‎00895142104002
Part Number	‎SPG/Slice - 10400
Item Weight	‎3.39 ounces
Item model number	‎10400
Is Discontinued By Manufacturer	‎No
Size	‎10400
Pattern	‎Box Cutter
Power Source	‎hand_powered
Item Package Quantity	‎1
Special Features	‎Locking Blades, Adjustable
Included Components	‎10400
Batteries Included?	‎No
Batteries Required?	‎No

Additional Information

ASIN	B00428M7IO
Customer Reviews	6,595 ratings 4.5 out of 5 stars
Best Sellers Rank	#2,440 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #11 in Utility Knives
Date First Available	September 8, 2010

Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.

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Product Description

Slice - 10400 Box Cutter, 3 Position Manual Button with Ceramic Blade, Locking blade

Top Brand: Slice

Highly Rated

100K+ customers rate items from this brand highly

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50K+ orders for this brand in past 3 months

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WARNING: California’s Proposition 65

Compare with similar items

	This Item Slice - 10400 Box Cutter, 3 Position Manual Button with Ceramic Blade, Locking blade	Recommendations Noa Store Box Cutter Retractable, Set of 3, 2.9"x6.6" - 3-Position Manual Slider Button with Ceramic Blade - Alternative to Utility Knives - for Cutting Packaging, Foam, Vinyl, Cardboard - Blue/Black	M MEEPO Box Cutter, 4-Pack Tough Folding Box Cutter for Heavy Duty Purpose, Razor Sharp Blade, Comfortable Handle, with Extra 10-Piece Blades, Can cut Drywall, Sheet Plastic, Linoleum, Boxes, Rope	KingTool Box Cutter Utility Knife - Box Cutter Retractable Box Opener With Total 5 pcs SK5 Blades, Aluminum Shell With Rubber Grip, Razor Blades Utility Knife For Package	Slice 10400 Manual 3-Position Box Cutter, Ceramic Blade - Lot of 3	DIYSELF 2Pack Utility Knife Box Cutter Retractable Blade Heavy Duty(Red)
	Try again! Details Added to Cart spCSRF_Treatment	Try again! Details Added to Cart spCSRF_Treatment	Try again! Details Added to Cart spCSRF_Treatment	Try again! Details Added to Cart spCSRF_Treatment	Try again! Details Added to Cart spCSRF_Treatment	Try again! Details Added to Cart spCSRF_Treatment
Price	$15.90	-15% $10.99 List: $12.99	$9.99	$13.99	$76.58	$7.99
Delivery	Get it as soon as Wednesday, Apr 23	Get it as soon as Wednesday, Apr 23	Get it as soon as Wednesday, Apr 23	Get it as soon as Wednesday, Apr 23	Get it Apr 24 - 28	Get it as soon as Wednesday, Apr 23
Customer Ratings	4.56,595	3.932	4.72,288	4.41,352	5.01	4.66,613
Sold By	GNS Products Limited	Best Deals !	xueqiangqiang	United Innovations	SEKEGE	DIYSELF
blade material	Ceramic	Ceramic	Plastic, Alloy Steel	Stainless Steel	Ceramic	Metal
handle material	Glass Filled Nylon	Plastic	Plastic,Steel	Rubber	Alloy Steel	Metal
handle type	Manual-Retractable	Manual-Retractable	Manual-Retractable	Manual-Retractable	Manual-Retractable	Manual-Retractable
style	Manual,Simple	Retractable	Ergonomic	Manual Retractable	—	Ergonomic

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Customer reviews

6,595 global ratings

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Customers say

Customers find the box cutter easy to hold and use, with a unique rounded design that makes it safe for children to use. Moreover, the ceramic blade works well, and customers appreciate its effectiveness on different materials. However, durability and sharpness receive mixed feedback - while some say it lasts for years and stays sharp, others report it breaks easily and isn't sharp enough. Additionally, customers disagree on its cutting ability, with some finding it easy to cut boxes while others say it barely cuts cardboard.

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Ease of use Cutter quality Works well Safety Design Durability Cutability Sharpness

398 customers mention "Ease of use"353 positive45 negative

Customers find the box cutter easy to hold and use, with an ergonomic design that feels surprisingly natural in the hand.

"This is simply the best box cutter I've ever used. It's easy to hold, cuts accurately, evenly and smoothly, and best yet, doesn't cut you..." Read more

"...Again the blade has yet to have issues. The grip is pretty secure and there is a belt hook so you can put it on your belt without worrying about it..." Read more

"...Furthermore, the ergonomic design actually does make it easier on the hand to cut when you have to break down a ton of boxes...." Read more

"...I started using it I realized that this shape allows you to quickly slide the handle into a pocket or belt to hold it securely but still keep it..." Read more

366 customers mention "Cutter quality"363 positive3 negative

Customers find the box cutter performs well, particularly with cardboard boxes, and one customer mentions it works effectively on various materials.

"...It's easy to hold, cuts accurately, evenly and smoothly, and best yet, doesn't cut you if you touch the blade...." Read more

"...It is definitely a good utility knife to have around as it is safe, sturdy, and cuts through packaging tape without worrying about cutting yourself." Read more

"...However, to my surprise, it not only cuts just as effectively, but also with almost no extra effort than a traditional box cutter...." Read more

"...The device cuts as well as the blade does...." Read more

239 customers mention "Works well"226 positive13 negative

Customers find that the utility knife works well, with the ceramic blades performing particularly effectively.

"EZ and safe" Read more

"...Very ergonomic. Not impressive, but gets the job done." Read more

"An indulgence that is worth it. Well made, works great. Do I need it: NO. Do I like and want it: YES" Read more

"Have used it a couple of times and it works perfectly. Have been looking for something like this for quite some time." Read more

182 customers mention "Safety"178 positive4 negative

Customers find the utility knife extremely safe, particularly noting that the ceramic blade makes it suitable for children to use and reduces the risk of injury.

"...It is definitely a good utility knife to have around as it is safe, sturdy, and cuts through packaging tape without worrying about cutting yourself." Read more

"...This is another reason it is safer (for you and whatever's in the box)...." Read more

"EZ and safe" Read more

"...Its durability, safety features, and longevity make it a cost-effective choice compared to traditional box cutters that require constant blade..." Read more

136 customers mention "Design"118 positive18 negative

Customers appreciate the design of the box cutter, particularly its unique rounded shape and ergonomic handle.

"...This is an innovative and functional box cutter with a unique design...." Read more

"...The orange color is not bad but it see darker near the tip piece. Because it has no real metal, it is not prone to rusting...." Read more

"...Good design and idea, maybe needs a little more finessing." Read more

"...no different than a generic $5 carpet cutter but there are some design refinements that make this thing perfect for home use..." Read more

165 customers mention "Durability"92 positive73 negative

Customers have mixed experiences with the box cutter's durability, with some finding it well-engineered and saying it should last for years, while others report that it breaks easily and tears through materials instead of cutting them properly.

"...It's easy to hold, cuts accurately, evenly and smoothly, and best yet, doesn't cut you if you touch the blade...." Read more

"Didn't even last a year" Read more

"...It is definitely a good utility knife to have around as it is safe, sturdy, and cuts through packaging tape without worrying about cutting yourself." Read more

"This light and somewhat ergo-dynamic but it is not heavy duty. For breaking down cardboard boxes a traditional boxcutter works faster and easier...." Read more

144 customers mention "Cutability"71 positive73 negative

Customers have mixed experiences with the box cutter's cutting ability: while some report it easily handles boxes and tape, others find it barely cuts cardboard and is hard to use on fully standing boxes.

"...utility knife to have around as it is safe, sturdy, and cuts through packaging tape without worrying about cutting yourself." Read more

"Not a razor cutter...it has a plastic blade. Don't know how long it will last or if replacements are a reality but it does know down boxes well." Read more

"...Furthermore, the ergonomic design actually does make it easier on the hand to cut when you have to break down a ton of boxes...." Read more

"...But often times, it takes a few times to cut thru the boxes. If the blade was to protrude a little more, the problem would have been fixed...." Read more

133 customers mention "Sharpness"82 positive51 negative

Customers have mixed opinions about the utility knife's sharpness, with some finding the blade sharp and noting it maintains its edge, while others report that the ceramic blade is not nearly sharp enough.

"...It's easy to hold, cuts accurately, evenly and smoothly, and best yet, doesn't cut you if you touch the blade...." Read more

"...Good design and idea, maybe needs a little more finessing." Read more

"Look, is this AS sharp and AS good as a cutter with a traditional blade? No...." Read more

"...-This blade is sharp enough to slice through heavy corrugated cardboard with ease, whether tearing down boxes or cutting the flaps off a 12 pack of..." Read more

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Top reviews from the United States

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Richard
A safe box cutter that works very well.
Reviewed in the United States on April 15, 2025
Size: 10400Color: Locking BladeVerified Purchase

This box cutter works great and feels safe to use with the ceramic blade. Easy to hold and cuts through boxes without much effort.

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J.R. Sedivy
The Best Box Cutter
Reviewed in the United States on March 8, 2025
Size: 10503Color: Green - Blade Auto RetractsVerified Purchase
This is simply the best box cutter I've ever used.

It's easy to hold, cuts accurately, evenly and smoothly, and best yet, doesn't cut you if you touch the blade. The lock mechanism is secure and easy to engage/disengage, and the blade stores firmly within the cutter. This is an innovative and functional box cutter with a unique design. The only drawback is that you have to use proprietary blades, one is included preloaded in the cutter, but given the benefits this is a fair tradeoff.

Highly recommended.

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RedXepher82
Makes quick work of opening boxes, safe to use. Not the best for cutting into cardboard
Reviewed in the United States on July 25, 2022
Size: 10400Color: Locking BladeVerified Purchase
This is a good safe knife to use when you are trying to cup open boxes. I normally need one that can be used to cut boxes to make them easier to throw away. It makes quick work of cutting the packaging tape but it is safe enough to not cut you which is good. Regardless it safety retracts and stores the plastic blade. You have to actually press and hold the button down to extend and retract the blade. This makes it so the knife cannot close by itself by accident when you are cutting. You can flip the blade around but the material has yet to go blunt. The blade itself can also be easily replaced all you need to do is press and unlock the cover to expose the blade. You then can replace it with a new blade. You need to replace it with a slice blade. What is nice about this blade is that only half it is actually out so when the one side gets dull you just need to turn it around and presto you have another blade to use. Again the blade has yet to have issues. The grip is pretty secure and there is a belt hook so you can put it on your belt without worrying about it falling off. You have to find some kind of ring or hook to attach to it though. It is not included. This can cut most small boxes as well as tape which is great for me because I always have a ton of boxes and mailers I need to open. The orange color is not bad but it see darker near the tip piece. Because it has no real metal, it is not prone to rusting. This means it can get wet and you can easily clean/dry it out without fear of damaging it. Overall I think this device is pretty nice. It is definitely a good utility knife to have around as it is safe, sturdy, and cuts through packaging tape without worrying about cutting yourself.

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RedXepher82

Makes quick work of opening boxes, safe to use. Not the best for cutting into cardboard

Reviewed in the United States on July 25, 2022
This is a good safe knife to use when you are trying to cup open boxes. I normally need one that can be used to cut boxes to make them easier to throw away. It makes quick work of cutting the packaging tape but it is safe enough to not cut you which is good. Regardless it safety retracts and stores the plastic blade. You have to actually press and hold the button down to extend and retract the blade. This makes it so the knife cannot close by itself by accident when you are cutting. You can flip the blade around but the material has yet to go blunt. The blade itself can also be easily replaced all you need to do is press and unlock the cover to expose the blade. You then can replace it with a new blade. You need to replace it with a slice blade. What is nice about this blade is that only half it is actually out so when the one side gets dull you just need to turn it around and presto you have another blade to use. Again the blade has yet to have issues. The grip is pretty secure and there is a belt hook so you can put it on your belt without worrying about it falling off. You have to find some kind of ring or hook to attach to it though. It is not included. This can cut most small boxes as well as tape which is great for me because I always have a ton of boxes and mailers I need to open. The orange color is not bad but it see darker near the tip piece. Because it has no real metal, it is not prone to rusting. This means it can get wet and you can easily clean/dry it out without fear of damaging it. Overall I think this device is pretty nice. It is definitely a good utility knife to have around as it is safe, sturdy, and cuts through packaging tape without worrying about cutting yourself.

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47 people found this helpful

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Joseph J. Mayer
Good cutter, good concept, but it's a little awkward in the real world
Reviewed in the United States on August 27, 2022
Size: 10400Color: Locking BladeVerified Purchase
The blade on this is the pretty standard Slice ceramic blade. A little more expensive than steel razor or carpet cutter blades, but they're pretty durable if you don't twist them. They say this device has a 3-position blade, and I'm assuming that's fully open, half open, and closed. The half open (blade halfway out of the shaft) is probably useful for letter opening or maybe for cutting tape on delicate postal packages. I never use it. I always have it either closed or fully open.

The device cuts as well as the blade does. The blade that came with it works fine for opening the boxes we get on containers from China, and for cutting open shrink wrap on pallets. The only reason why I didn't give this thing a fully 5-star rating is because it's kind of big. That hook on the butt of it serves a purpose, and you can definitely just push the thing down against a pallet or a box and be able to cut the tape or wrap from it, but it's pretty big in your pocket, and you really have to hold it just the right way to get it to cut well. When you have to cut a pallet wrap that is not directly against the side of a box, it takes several more swipes to get done than with a normal box knife.

Maybe if the blade extended a little further, this wouldn't be an issue, but on the model that I have, I mostly just use it as a box opener, not for cutting open pallets, and having to use two tools doesn't help my productivity all that much.

Good design and idea, maybe needs a little more finessing.

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16 people found this helpful

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J. Levy
Super Effective with Peace of Mind
Reviewed in the United States on November 7, 2024
Size: 10400Color: Locking BladeVerified Purchase
Look, is this AS sharp and AS good as a cutter with a traditional blade? No. However, if you really are just using it to open boxes mostly, you don’t need something insanely sharp. And if you have kids around, it can make you anxious about the idea of them finding where you keep the box cutter.

I was hopeful that this would be good, while trying to keep my expectations low, since it didn’t have a sharp blade. However, to my surprise, it not only cuts just as effectively, but also with almost no extra effort than a traditional box cutter. Any time I have needed to use this, it worked exactly how I needed it to. Furthermore, the ergonomic design actually does make it easier on the hand to cut when you have to break down a ton of boxes. And you really do need to apply a good amount of pressure to break skin with this blade. I recommend this over any alternative by far.

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11 people found this helpful

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PineappleJBM
Great quality, great design
Reviewed in the United States on April 16, 2025
Size: 1 PackColor: Fuchsia, Manual RetractVerified Purchase
My job requires opening shipment boxes regularly. After cutting my thumb in the same spot with a dull blade numerous times over the years, I decided to “invest” in a better box cutter. After using for a few months I highly recommend this box cutter. The quality is great and the ergonomic design makes it easy to use. The blade has remained sharp (estimating 200 +/- boxes opened thus far). Most importantly, it met my one requirement — the curved handle prevents me from cutting my thumb on the opposite hand.

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Top reviews from other countries

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Amazon Customer
Safe product for daily operations
Reviewed in India on July 5, 2024
Size: 10503Color: Green - Blade Auto RetractsVerified Purchase

Recommend to use in terms safety and longer durability.

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T. L.
Coupe emballages efficace
Reviewed in France on April 7, 2025
Size: 10503Color: Green - Blade Auto RetractsVerified Purchase
Parfait pour découper les cartons sans risque de se blesser.

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Oval
Almost as good as the pen cutter
Reviewed in Singapore on February 17, 2024
Size: 10503Color: Green - Blade Auto RetractsVerified Purchase
I don't like the shape getting in the way sometimes but it is good as a spare cutter

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H. Bolle
Paket-Öffnen leicht gemacht
Reviewed in Germany on July 16, 2019
Size: 10400Color: Locking BladeVerified Purchase
Ich habe bisher immer mit einer Schere die Pakete geöffnet und mich dabei schon ein paarmal geschnitten. Dann dachte ich mir, es muss doch noch eine andere Lösung finden. Und so fand ich diesen Kartonschneider, mit dem das Paketöffnen so unglaublich einfach und angenehm ist. Es ist überhaupt kein Vergleich zu früher. Ich kann jedem diesen Kartonschneider empfehlen. Ich habe ihn nun auch schon häufig verwendet.

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MUKO
力がいらない。刃が出ていてもほとんど安全に作業出来る。
Reviewed in Japan on May 20, 2020
Size: 10400Color: Locking BladeVerified Purchase
引越時の段ボール開封作業がはかどりました。

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Slice - 10400 Box Cutter, 3 Position Manual Button with Ceramic Blade, Locking blade

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OEKO-TEX MADE IN GREEN

OEKO-TEX MADE IN GREEN

OEKO-TEX MADE IN GREEN

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Slice - Safer Cutting Tools

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5.0 out of 5 stars A safe box cutter that works very well.

5.0 out of 5 stars The Best Box Cutter

5.0 out of 5 stars Makes quick work of opening boxes, safe to use. Not the best for cutting into cardboard

Makes quick work of opening boxes, safe to use. Not the best for cutting into cardboard

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4.0 out of 5 stars Good cutter, good concept, but it's a little awkward in the real world

5.0 out of 5 stars Super Effective with Peace of Mind

5.0 out of 5 stars Great quality, great design

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4.0 out of 5 stars Safe product for daily operations

5.0 out of 5 stars Coupe emballages efficace

4.0 out of 5 stars Almost as good as the pen cutter

5.0 out of 5 stars Paket-Öffnen leicht gemacht

5.0 out of 5 stars 力がいらない。刃が出ていてもほとんど安全に作業出来る。

A safe box cutter that works very well.

The Best Box Cutter

Makes quick work of opening boxes, safe to use. Not the best for cutting into cardboard

Good cutter, good concept, but it's a little awkward in the real world

Super Effective with Peace of Mind

Great quality, great design

Safe product for daily operations

Coupe emballages efficace

Almost as good as the pen cutter

Paket-Öffnen leicht gemacht

力がいらない。刃が出ていてもほとんど安全に作業出来る。