General description The US PRO AIR DIE GRINDER 15PC 1/4'' POLISHER SANDER KIT is a professional toolset designed for versatility in grinding, edge breaking, porting, and polishing. Its compact design allows for easy maneuverability in tight spaces, ensuring a quality finish even in challenging areas. Technical specifications Free speed: 25,000 RPM Air inlet: 1/4" Mini Die Grinder length: 157 mm Contents include: 1 x 1/4" (6mm) Mini Die Grinder 2 x Hand Wrenches 5 x 3mm (1/8") Mounted Grinding Stones 5 x 6mm (1/4") Mounted Grinding Stones 1 x 3mm (1/8") Collet 1 x 1/4" BSPT Male Quick Plug