Mighty Seven 3200 BPM Air Hammer Round ShankExperience fast and precise hammering with the Mighty Seven 3200 BPM Air Hammer Round Shank. Its heavy duty hammering power with 3200 blows per minute efficiently drives pins and fasteners into metal and wood. With a round shank design, this air hammer gives you maximum torque at high speeds. Spring retainer for simple accessory changing Common applications include exhaust work, bolt cutting, panel cutting, and general work requiring percussive action