Hammer heads are made out of mild steel and then machined, finished and balanced for accurate stroke. Mallets are made from inflammable and stroke proof cellulose acetate that protects workmen and machines against any injury. the mallets are changeable. The grips are made out of rubber so as to ensure proper grip avoiding any slippage. These hammers are generally used in automobile and commercial vehicle factories. The size of hammer heads vary according to the diameter of mallets.