I bought a pack on a whim to try. They are as thin as a DE and IMHO they are not very sharp at all. I had to pull it out and put a Proline in to finish the tugging was so bad. I thought maybe it was the blade, tho not likely so i pulled a second out. Same thing, crappy. tugging and not pleasant at all. Someone said they are sharper than a Proline/KAI/Feather. I have no idea if I got a pack that rubs the edge when ejecting the blade or something but these things are terrible. Also, the pack sucks too. It has no slide mechanism to eject the blade so it's got easy to get it out. I thought maybe i was going to be on to something since they are $12 for $50 blades. NOPE!