CANARY Corrugated Cardboard Cutter Dan Chan, Safety Box Cutter Knife [Non-Stick Fluorine Coating Blade], Made in JAPAN, Yellow (DC-190F-1) (Bulk 5 pcs)

I open all of my packages with this knife. I used to work at a warehouse and used this knife literally almost everyday for 3 years and not once has it gone dull or not performed as it was designed to. Everyone would ask where I got it from since. It cuts through packaging tape like a hot knife through butter. Also cuts into cardboard straight and true every time.The handle could be a little bigger but it works fine for me and I've never had it slip out. Build quality is very high and the knife outperforms anything else that I've ever had. No more utility knives for me. I would highly recommend this if you are opening packages or needing to cut cardboard on the regular.

These knives are uniquely able to cut cardboard and yet be safe to use for group work in art therapy.

I like the products but the plastic case is useless.

These cutters saw through cardboard with precision and so safe to use instead of a normal knife.

Bought these to use in a STEM lab for upper elementary and middle school. It has been so hard to find a tool (other than box cutters) for cutting cardboard. These are the perfect find as a mid-point between "Make Do" tools (for youngers) and the risky sharp box cutters. I have only had a couple students test them--we ALL were amazed at how easily they cut cardboard! Currently, they are sharp enough to score the cardboard (without having the saw all the way through), and the way the end is shaped is perfect for them to make slots. I'd say the edges are sharp enough that I won't let under 4th grade use them, but I expect my students will feel "grown up" as they use this safer, but effective tool! p.s. I am pairing these knives with my new canary cardboard scissors...the creative freedom of my students has been unleashed!