M7-QB197QMW | M7 Wet Grinder 180mm Extra Heavy Duty 2.2HP Quiet Safety Lever Throttle w/ Side Handle Spindle Feature Enjoy the excellent features of the M7-QB197QM Heavy Duty angle grinder fixed with a water conversion kit for wet grinding. Specifications Wheel Diameter: 180mm (7 ) Spindle Size: M14 x 2.0 Free Speed: 7000 RPM Air Requirements: 6 CFM / 90 PSI Inlet: 3/8 Overall Length: 353mm Rated Power: 2.2HP Net Weight: 3.1kg Sound Pressure: 77 dBA Vibration Level: 1.5m/s