Amartisan 14-Piece Retractable Box Cutter, Utility Knifes for Boxes, Cartons, Cardboard Cutting, 18mm & 9mm Wide Blade Cutter, Very Suitable for Office and Home Use.

These are great when compared to the "old style" razor knives.

I got a whole box of these. They are nice and sturdy and easy to use. You can break off the blade to get a new one. I use a flat pair of pliers and it makes a nice clean break. These are even sharper than the last ones I had. You can use the safety to lock the blade in place. Would absolutely buy again, but probably won’t need to in a very long time.

Works as advertised

Depends on what you need it for. It's alright for what it is. Locking mechanism works and is easy to understand, it has a ridged design for easier grip, the blades are sharp and relatively sturdy, but the plastic housing is pretty cheap and flimsy, moreso for the 9mm than the 18mm. If you're used to metal housings, it's a shift for sure. If you have decent existing utility knives, probably just get replacement blades for those. These are great to just have all over the place so you always have one in reach, or as cheap ones to hand out for a short class or activity. TL;DR If you need to use utility knives frequently, and don't foresee that changing anytime soon, get yourself a better one. If this is for a camp activity, short learning workshop, or to have sprinkled around with uses divided amongst them, it's a solid cheap buy.

I’m really impressed with this set! The Amartisan 14-piece retractable box cutter set is incredibly useful—whether I’m opening boxes at home, cutting cardboard for recycling, or using them in the office. The variety in blade sizes (18mm and 9mm) is perfect for different tasks, and having multiple cutters means I can keep one in the garage, kitchen drawer, and office desk. The retractable blades slide smoothly and lock securely in place, which is a big plus for safety. The handles feel sturdy and comfortable to grip, not flimsy like some other brands I’ve tried. Also, the blades are sharp right out of the box and slice through packaging with ease.

This set came with 14 pieces with two different sizes inside. I use these to break down the many boxes my household receives on a weekly basis. The blades stay relatively sharp and haven’t had to toss out one yet due to dullness. Super easy to use.

You get a lot, but you may need them. These are NOT UTILITY KNIVES. They will be fine for light duty things around the house. Standard quality blades have a thickness of 0.5mm, these are 0.32mm. Not as much meat to support the cutting edge. Type of alloy and tempering are part of it too, but still. I used a brand new one to cut off the end of a 5/8 garden hose to install a new fitting. Only 1/4 way through and it started resisting. I was rocking the blade "Hose on Thumb" style. Worked to 1/2 way, looked at the blade and most of the edge of 2" of blade was curled, missing. It looked like a serrated blade. I finished with that same 2" piece of blade just to see if I could. Finally! Only a minute going in reverse on some 400 grit paper, and it was one edge again. Just go easy on them, and you'll have plenty around when you need one. Still a good deal, really.

Always need a sharp knife around the garage, shop, kitchen area opening packages.