The SIP 1/2\" Reversible Key Chuck Air Drill has a double reduction planetary gearing for improved power, side-mounted lever, and is ideal for honing, drilling, reaming and more. 700rpm maximum operating speed 90psi (6.3 bar) average operating pressure 4CFM (114 litres/min) average air consumption One-handed side-mounted forward/reverse lever Double reduction planetary gearing for high power Ideal for cylinder honing, drilling, reaming, and more Integrated handle exhaust with built-in muffler Handy adjustable side handle Quality 1/2\" key-type chuck 1/4\" BSP air inlet Technical Description: Speed 700rpm Operating Pressure 90psi (6.3 bar) Chuck Type/Size Key Chuck - 1/2\" Air Consumption 4.0CFM (114 litres/min) Air Inlet 1/4\" BSP Sound Pressure (LpA) 81.1dB(A) Sound Power (LwA) 92.1dB(A) Vibration 1.2m/s² Packaged Dimensions 51 x 160 x 235mm Additional Planetary geared