Chuck Size/Wheel Size: 7/16"Weight: 2-1/4 lbs. - 1.0kgLength: 8-1/4" - 206mmAvg. Air Consumption: 4 CFMAir Inlet NPTF: 1/4"Min. Hose Size: 3/8" - 10mmSound Dba Pressure: 98 - 108Power Vibration: 2.5Free Speed: 2500 RPM