Save your Money
I was using the Derby blades that come in the green box and was pretty well satisfied with them. I could get 2 shaves off a blade with ease. I always shave first with a regular razor and then clean up the shave using these. The ones here in the black boxes don't come close to the ones in the green boxes. Must be why the price is so cheap for the amount you get. I use them once and throw them out and even then it is hard to clean up what the regular razor missed. Probably going to throw them out cause I find myself going over and over the same spots with minimum results....
Rating: 2 stars