General description The Blue Spot Tools 15 PCE Air Die Grinder Set is ideal for grinding and polishing a range of materials. This comprehensive kit includes everything you need for effective and efficient work. Technical specifications Free speed: 25,000 RPM Air consumption: 4 CFM (114 L/min) Operating pressure: 90 PSI (6.2 bar) Inlet: 1/4" BSP Compatibility and accessories 1x mini air die grinder with 6mm (1/4") collet 1x 3mm (1/8") collet 2x hand wrenches 5x 1/4" (6mm) shank grinding stones 5x 1/8" (3mm) shank grinding stones 1x 1/4” air line fitting Other information The set is supplied in a useful, blow-moulded plastic carry case.