I first found these blades in a discount store and thought I’d give them a try… I was SO impressed I went back and bought several packages and continued to buy them there. They are so good. I have a heavy beard and sometimes had to shave twice a day if I was going out in the evenings.. These blades last me three weeks at a time, which is very unusual for me to keep a razor that long. I always get a smooth shave, no nicks from dull blades and they seem to last forever. Unfortunately, that store doesn’t carry them and I’ve not been able to find them except on line. But it’s worth shopping for them if you can find them locally.