OLFA 18mm Heavy-Duty Ultra-Sharp, Snap Off Replacement Blades, 50 Blades (400 segments) LBB-50B - Snap-Off Utility Knife Replacement Blades, 25% Sharper than Silver, Fits most 18mm Utility Knife

The OLFA 18mm Heavy-Duty Ultra-Sharp Utility Knife sets the gold standard for cutting tools. Its superior blade sharpness is unmatched, effortlessly cutting through tough materials like 1" rubber roofing pads, sound-absorbing panels, weather stripping, and anything else you can throw at it. , the blade stays razor-sharp far longer than other brands. The OLFA 18mm Ultra-Sharp is an easy choice.

The best! Sharp as can be.

Packaged well and priced right compared to the small package at the big box hardware stores...I checked!

Amazingly sharp. Considerably sharper than standard Olfa blades. These don't cut so much as glide through. Well worth the money.

I love this. Every time I tear into a new piece of foam core it fills me with joy. The black edition definitely cuts for longer. It stays sharp for more cuts, and is just amazing to look at. If you are one of the few people who get pleasure from getting clean cuts, you'll want to have this in your life. Now. I barely use any other blades/cutters. No flimsy exacto knife #2 for me. No 10000 little blades to buy.This blade and the olfa holders gives unexpectedly clean/easy cuts that are VERY precise. Once you master this in your hands, you'll save a lot more time just cutting with this, instead of switching out blades all the time.I am an art student and dependable/sharp blades for clean cuts is VERY important to me. I wish I knew of this blade/knife combo when I first started my art education, instead of in the middle of it. A++++++ all the way. Get it. Feel the power.If I could, I would cuddle next to my blades.But the student loans are stabby enough.

very useful

they fit, they work

Genuine Olfa is the way to go for the large blades. These have been my standard for years.The black coating helps prevent the blade from sticking through what ever it is as you slice (generally through your finger/thumb...)They hold an edge better than the aftermarket stuff too.