Slice Auto-Retractable Utility Knife, Heavy Duty Box Cutter, Safe Ceramic Blade Lasting 11x Longer Than Metal, 1 Pack

Best product for safety. Cannot cut yourself but cuts rope like butter, will not buy any other brand! 10/10

I CANNOT RECOMMEND THIS PRODUCT ENOUGH!!! After using it for 1 month I couldn’t imagine going back to using a dangerous blade! It breaks the seal effortlessly and we’ve replaced all razors in our home to these! - I even gifted it to several family members for Christmas!

It has nice ergonomics and I think it supplies the whole safety promise, but it’s not practical for people that aren’t required to have those safety features. It’s difficult to open boxes with, due to its dull tip and having to find the sweet spot on the blade every time.

My husband bought this knife for me over a year ago. I absolutely love how it cuts through anything I have to cut at work (plastic, cardboard boxes, tape, straps, ) it hasn’t disappointed me yet. I keep a pack of extra blades in my toolbox at work, but don’t have to change it very often. I would highly recommend this knife. I love the safety features especially the retracting blade, as I work fast paced at my job and have hit my hand against previous knives and cut myself on them. If you want something that has safety and good cutting this is the knife to buy.

Cutter is very sharp and cuts through almost anything in one pass. Also has a good amount of weight to it, which makes cutting through thick material easy. One gripe: It should be easier to adjust the handedness of the blade without having to use extra tools to open the body.

I open a lot of boxes at home and work, I got a smaller one for work and this larger one for home. It's much better than a pocket knife, which I have had close calls with the blade closing on my fingers because I was stupid and pushed the wrong way on the blade. This thing makes it really hard to hurt yourself. I can run it on my skin on purpose and it does not even scratch me but yet it goes through shipping tape even the heavy duty stuff like butter.

I decided to try this based on the positive reviews but didn't really expect it to work too well. I've already used it to cut some sturdy cardboard and it did a great job. I got this primarily for cutting open bags of salt -- the standard utility blades I used rusted so fast it made sense to spend a little more for a ceramic blade that wouldn't corrode from the salt.

The first thing I did when I got this knife was naturally to feel it against my skin and see if it would cut me. I put it against my skin, applied light pressure, and immediately felt that familiar blade cutting feeling. If I didn't stop, it would have cut me. Between this and the performance of the blade with cutting, I've discovered that the blades aren't specially engineered to be sharp yet safe, with a micro bevel or any of that; it's just dull.It takes more effort to cut through something, like a dull blade. It smashes and tears half the time instead of cutting, like a dull blade. And most importantly, it'll still cut you when you slip, just like a dull blade. There is no reason to use this over those plastic tape nub slicers. It seems like I'll have to look into normal ceramic utility blades.