Storm Force® pneumatic grinder, with integral composite body that reduces weight, sound level, vibration level and the cold effect on the tool. Especially useful for polishing and grinding work on metal components. Each pneumatic grinder is equipped with a variable speed motor, a rotating air outlet and a rubberized handle. Speed: 25,000 rpm Air pressure: 6.2 bars (90 psi) Average air consumption: 198 Lt/min (7 cfm) Minimum hose size: 10 mm (3.8) Air inlet thread: 1/4 BSPPWeight: 350g