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Auto-Retractable Box Cutter

  • The Slice® 10503 Auto-Retractable Box Cutter with safety blade
  • Auto-Retractable Box Cutter - Features
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  • Ergonomic Box Cutter
  • Box Cutter for a Warehouse
  • Comparison_Graphic-10503-10400.jpg
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 SKU #10503
Price Quantity
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The Slice® 10503 Auto-Retractable Box Cutter takes safety to a new level with an ergonomic, protective J-hook handle and our patent-pending safety blades. Avoid injuries with a retractable box cutter that prevents you from accidentally leaving the blade exposed. Keep your fingers safe with our protective handle. This safety box cutter uses 100 percent zirconium oxide blades that are non-sparking, non-magnetic, chemically inert, safe up to 1600 degrees Celsius, and never rust. Suitable for many materials, including single- and double-walled corrugated. Hang the 10503 on a pocket (keeping the blade outside and away from your body) or use the lanyard hole to keep your tool handy.

  • Installed blade type: rounded tip #10404
  • Durable nylon handle with non-slip grip
  • Automatic spring-loaded retraction for added safety
  • Ergonomic handle helps reduce strain injuries
  • Ambidextrous design
  • Lanyard hole
  • Finger-friendly® blade cuts effectively
  • Reduces injuries, lowers costs
  • Non-sparking, non-conductive, non-magnetic blade
  • Chemically inert blade never rusts
  • Oil- and lubricant-free blade
  • 100 percent zirconium oxide blade
  • Blade edge lasts up to 11.2x longer than metal
  • Fewer blade changes = fewer injuries
  • Compatible blades: 10404, 10408
  • No-tool blade change
  • SKU #10503

Compatible Blades  

Product Specifications  

Cutting Depth
8.5 mm
96.0 g
L 177.0 x W 85.0 x H 18.2 mm
TPEE, GFN, POM, carbon steel, zirconium oxide


4.6 / 5
71 reviews
  • Anonymous
    9 months ago
    We received a free sample and the operators used them in a bag opening operation. they found this to be the safer and more user friendly cutter compared to other options.
    0 replies
  • Kathleen Willenbring
    1 year ago
    Bought this one for a friend, he loves it.
    0 replies
  • Anonymous
    1 year ago
    Great knife for opening packages.
    0 replies
  • Robert Allingham
    1 year ago
    Easy to use and does what you want
    0 replies
  • Michael Angulo
    2 years ago
    its a little bigger then i thought it would be but works pretty darn good for work
    0 replies
  • joseph garcia
    2 years ago
    Good durable product.
    0 replies
  • Bryan Richardson
    2 years ago
    Great product! I love all Slice products I’ve tried!
    0 replies
  • Helga Martinez
    3 years ago
    works well with boxes and is safe to use
    0 replies
  • Zelda Gardner
    3 years ago
    I've purchased these four times, they work well for cutting poly bags.
    0 replies
  • Stephan Proulx
    3 years ago
    Works very well and easy to use
    0 replies
  • karl palmer
    4 years ago
    once you get the hang of it, it's a great carton opener
    0 replies
  • Wiliam Wynn
    4 years ago
    Great product and so much safer to use than metal box cutters.
    0 replies
  • Catherine Scott
    4 years ago
    Would be even happier if it included an extra blade.
    0 replies
  • Vic Saba
    4 years ago
    good product, ergo design is excellent.
    0 replies
  • Brigid Marsh
    4 years ago
    A good alternative to knives for opening boxes etc
    0 replies

Product Options 

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More About Our Auto-Retractable Safety Box Cutter

What Is a Box Cutter Used For?


As the name suggests, box cutters are often used to open corrugated material but they can also handle a wide variety of other materials such as clamshell packaging, tape, card stock, and plastic film. Be sure you choose the right blade tip (rounded or pointed) for your application.


Why Buy a Box Cutter From Slice?


The Slice® award-winning J-hook design changed ideas about how to use a box cutter. Not only does the wrap-around handle protect the user from staples and other debris, but the blade housing reduces unnecessary blade exposure. The handle also acts as a built-in guide, giving the user more control over the angle of the cut, and encouraging an ergonomic grip. Simply put, the Slice box cutter is a safety box cutter, from its finger-friendly® safety blade to its innovative tool design.


In addition to our auto-retractable box cutter providing a safer cut, Slice blades are also chemically inert, meaning they never rust. They’re non-conductive, oil and lubricant free, and they last up to 11 times longer than steel. Fewer blade changes are involved, which means more money in your pocket. The ergonomic handle also helps to reduce strain.


What About Replacement Blades?


When searching how to put a blade in a box cutter, you'll find all kinds of complex procedures involving screwdrivers and safety gloves. Not so with Slice's safe box cutters. Our tool-free blade replacement and patent-pending finger-friendly edge make blade changes easy and safe. And because our blades last 11 times longer than steel, you'll be replacing blades less often.


For most applications, the Slice 10404 rounded-tip blade adds extra safety protection, but for jobs that require a piercing action to initiate the cut, try the 10408 pointed-tip blade.


Which Slice Box Cutter Is Right For Me?


Slice manufactures two styles of J-hook tool: the retractable box cutter and the manual, or fixed-position blade, box cutter. The manual box cutter is ideal for users that are cutting constantly with few breaks in between strokes. The retractable box cutter has an added layer of safety because the retracting blade prevents the user from accidentally leaving the blade exposed when the knife is not in use.


Both Slice box cutters can handle material depths up to and including double-walled corrugated. If you're cutting something thicker, we recommend one of our utility knives.

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