M7-QA315B | M7 Die Grinder 25000rpm 280mm Long 1/8in & 1/4in Collet FEATURES Extended air die grinder. Safety lever throttle SPECIFICATIONS Collet Size: 1/4 & 1/8 Free Speed: 25000 RPM Air Requirements: 10 CFM / 90 PSI Inlet: 1/4 Overall Length: 280mm Rated Power:0.3HP Net Weight: 0.63kg Sound Pressure: 81.5 dBA Vibration Level: 1.8m/s²