25mm SK2H Ultra Sharp Snap Off Blades, Professional Retractable Utility Knife Replacement Blades (1PACK of 10pcs), Creative Safety Box, for Industrial or Construction Applications HT0082-BL

These are seriously sharp. Maybe the sharpest blades I've ever used in my life. Cutting through cardboard, paper, boxing material, poly, or styrofoam - it's a hot knife through butter each time. However, note that it almost goes towards being too sharp depending on the task. For the more industrial jobs of cutting sheetrock or gypsum, or for scoring wood or cutting plastic it's almost too thin and doesn't look like it serves this purpose well.

I have cut a lot of stuff to include many pieces of fiberglass insulation and cardboard. I'm only on the second blade! I have used all kinds of razor blades and quality knives, such as Benchmade, and these are significantly sharper along with being very durable! The blade holder is super easy to adjust the length of the blade and even works better than any others i have used! These are worth the price, and I feel they are worth more than they charge.

I have an Olfa knife and these blades work perfectly. They seem to me to be sharper and last longer.

Great quality very durable and sharp. Been using these brand for over 2 years and won’t switch to anything else

Not much to say other than it's sharp and strong, will keep ordering more as needed

These are by far the best ones I’ve gotten from Amazon. They hold an edge through a decent amount of cutting and I can usually use one down to at least the 2nd to last break-off point - which is way better than some of the others at the same price point. I def recommend.

These are real sharp and come in a cool case. I’ll only buy these from now on

Awesome blades! Super sharp and sweet single blade dispenser acrion! Will absolutely purchase again!!

No complaints

I was going to Home Depot and buying the black orphan blades to fit my knife, but these are far superior first of all in price. Secondly, they are easy to get out of the container compared to the other blades and I will be buying more of them. I manufacture knives and do leather work and use my knife a lot so these are lifesaver.

Very sharp and great quality product!

Cuts

Très satisfait