Safety Razor fans say that they get a closer shave with less maintenance with this razor. (Plus replacement blades cost a fraction of a cartridge razor.) The Safety Razor kit features a double edged razor and includes a handle and razor head (standard m5.x .8 thread) and uses the same tube sizes and bushings as our Mach 3® and Fusion® style kits. It a bit heavier than a cartridge style razor but fits on all PSI Razor stands. **The standard head bolt connection allows use of many other style safety razor heads.