Draper Warranty Included A low noise, low vibration grinder, perfectly designed for grinding and polishing metal components. Manufactured with a casing made from composite plastics and fitted with a high-tech variable speed control lever. Fitted with a variable speed motor, rotating air inlet that prevents air-lines from kinking and soft grip casing for user comfort. Supplied with two open ended collet wrenches. The ergonomic design and lightweight housing assist in prevention of the cold-sink effect. Display packed Collet size 6mm Free speed 25,000 rpm Operating air pressure 90psi (6.2bar) Average air consumption 7cfm (198L/min) Vibration level 0.9m/s2 Min. hose size 3/8" (10mm) Air inlet 1/4" BSP Weight 0.35kg.