1.Shank Shape:diameter 9.5*21/12.7*51mm with 23mm recess 2.Material: 42CrMo 3.size: 300-450mm 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 in chiseling hole, cutting, chiseling groove for concrete and brick ...