MR3: It is microminiature pencil type. Other than lead wire cutting it is suited for the cutting of the precise resin. MR5: Being light weight small-sized, it is especially for woman. MR 7: General type. MR 10: standard type. MR10A: small and strong type. MR20: It is easy to handle in medium size type, the simple caulking, bends, in addition it is the type where the application scope is wide.MR30A: Other than cutting, it is the type where the application scope of bonding, bend, the crushing and perforated and so on is wide by the fact that the substitution blade is exchanged. MR50A: It is power type.Cutting off, caulking and crushing is possible.