The Blue Spot Tools 15 PCE Air Die Grinder Set is ideal for grinding and polishing a range of materials. The set comprises: 1x mini air die grinder including 6mm (1/4"") collet, 2 x hand wrenches, 1 x 3mm (1/8"") collet, 5 x 1/4"" (6mm) shank grinding stones, 5 x 1/8"" (3mm) shank grinding stones, 1 x ¼” air line fitting. The set is supplied in a useful, blow-moulded, plastic carry case. Free speed 25,000RPM 4 CFM (114L/min) air consumption 90PSI (6.2 bar) Operating Pressure 1/4"" BSP Inlet Ideal for grinding and polishing Supplied in plastic carry case