Pneumatic Air Hammer MH-5111 Compact, light handy and durable - Spool valve for precise speed control - Heavy duty air hammer for general use - Ideal for muffler, pipe removal and body shop work Solid body Comfortable grip for increased control Lightweight for operator comfort Easy to operate Made in Japan Piston dia. / 19 mm Piston Stroke (mm) / 66 mm Stroke / Blow Per Min (bpm) / 3500 Net Weight (kg) / 1.6 Overall Length (mm) / 170 Air Inlet (pt) / 1/4 Chisel Shank Bore Size / 10mm