... 42CrMo or 40Cr 3.Surface: Sandblasted SHENLONG chisels for power tools as Bosch,Hitachi,Makita,used in cutting chiseling hole ... for concrete. Point Chisel/Flat Chisel/Groove ChiselAccessories for power tools as Bosch, Hitachi, Makita, ... Metabo, Hilti etc.Suitable for used with electric hammer ...