This Air Sander is ideal for smoothing fiberglass, wood, and body filler ... speed control Positive locking clamps Specifications:Free speed: 8,000RPMAv. Air Consumption: 6CFMPAD: 0.47*3.54*6.07", 12*90 ... , 5.28LbWorking Pressure: 90psi, 6.3kg/cm2Air Hose: 3/8"Air Inlet:1/4" Heavy Duty Orbital Air Sander Jitterbug Type