NPK chipping hammer is durable and strong. It is ideal for breaking off concrete, shaking out castings and de-rusting. Models with low vibration are also available: AA-15XSP, AA-3XBSP. 2 types of chisel insert shapes are available: round insertion (R) and hexagonal insertion (H) 2 types of chisel cutting edges are also available: flat and pointed Any length chisel can be provided