BerklingUtility Hook Razor Blades 50 PCS With Dispenser, SK2H Laser Sharpened Hardened, Ultra 3X Sharper and 5X Durable, Heavy Duty Replacement Blades for Carpet, Roofing Blade Knife, Box Cutter

For my knife perfect. Last quite a long time too.

These stay sharp and look great

I love these for me but there's a reason they're not the standard. They're insanely sharp, but they don't hold the insanity. After a few hard cuts you're back to normal razor blade performance. They're also more likely to snap than normal.Best dispenser in the game though.

I just received this and when I unwrapped it notice the back had come off and open the inside to see if I could reattach it and noticed it was broken. The blades are still good and with the help of gravity I can still use the holder it came in.

I saw these as I shopped for standard blades. Since I was installing artificial turf with a heavy plastic backing and had a lot of cutting on a curve, I thought I would give these a try.Wow! Not only did they cut through that heavy plastic backing on the turf, I almost made all of the 100 feet of cuts with a single side of one blade.I normally use this knife to cut Amazon boxes. These blades are so sharp that I am extra careful when doing it. I don't want to lose a finger.Highly recommend.

The package of blades I received are NOT sharp at all. The 3X sharper and 15X longer lasting is a joke. Visually, from the naked eye, the blades look fine. Looking at the cutting edge under a microscope shows a completely different picture. The sharpening is very rough, hence making this blade useless for slicing or cutting any type of material. I had high hopes for these blades, but they were a complete fail. If you want the best razor blade for your razor knife, I suggest purchasing the OLFA!

Good value, dispenser works well.

The Blades seem of pretty good quality and are VERY sharp. What sold me was the unique design of the dispenser case. I got to say it works amazingly, now I wish all blade dispensers used the same design. simply slide the red arm and out pops a fresh sharp blade.

Do you want something that makes you feel and look like a pro? Don't look anymore and get these ones, ultrasharp durable high quality

Exactly what I was looking for.Caution; the packaging is NOT childproof keep away from children at all cost those blades are NO JOKE.

All good

The blades are sharp, but I'm a contractor and cut all kinds of materials. Cutting, or scoring aluminum flatstock the blade tip breaks right away and then continues to break farther along. So I actually think its too hard of steel, and brittle. And cutting other things like plastic or cardboard they seem to last just as long as Irwin or Stanley blades.