"4,500 RPM with built-in regulator. Vibration-free ball bearing construction. Side handle fits on either side. Complete with 7in. pad. 1/4in. air inlet, 90 PSI working pressure. 5.3 CFM. 16in. long. Tool Length in. 16, Side Handle Yes, Air Inlet Size in. NPT 1/4, Pad Diameter in. 7, Air Consumption CFM 5.3, Variable Speed Yes, Spindle Size in. 5/8 x 11, Vacuum Ready No, Speed RPM 4,500, Min. Hose Size in. 3/8, CFM at Load 5.5, Case Included No, Random Orbital No. Built-in regulator Vibration-free ball bearing construction"