I bought this replacement blade as mine were starting to get dull and giving uneven cuts. I'm not a pro barber, but around covid I started cutting my own hair. So there really isn't anything I need more than just being able to get a clean fade. I could use a razor, but being that I'm African-American, sometimes using a razor will leave you with razor bumps, which is a whole other thing all together. So I got these as a replacement for my dull ones. I can tell the difference from the first cut. I...