These are replacement blades compatible with Gillette razors. I tried one, but the razor itself broke, so I'm selling the remaining 15 blades as a set. They are 5-blade specification and do not have a trimming blade. The initial shaving feel wasn't bad, but since I haven't used them for a long time due to the razor's malfunction, I don't know how the shaving feel changes with long-term use. Please be aware of this.