Features and Benefits: Same Great Features As The Cpt860 With A 6 Extension Rugged, Energy-Efficient 1/2 Hp Motor Adjustable Power Regulator For Precise Control Lock Off Throttle To Prevent Accidental Start Ups Square Handle Design For Positive Griprear Exhaust Directs Air Away From Work. Complete With 1/4 and 6Mm Collet. Excellent For Cleaning Tire Moldings, Porting and Relieving Engines, and General High Speed Polishing and Grinding. Free Speed: 24,000 Rpm. Collet Size 1/4 – 6Mm; Average Air Consumption 5 Cfm; Air Inlet Thread: 1/4 Nptf; Minimum Hose Size 3/8; Sound Dba: 93; Length: 11.75; Weight: 2.1 Lbs.