Lightweight, compact size is easy to handle, Provides full power in forward and reverse, Equipped with a built-in muffler for noise reduction, Planetary gear system for long life, Ergonomic rubber handle.Specifications:Chuck Capacity: 3/8""Free Speed: 1,800rpmOverall Length: 7-7/8"" (200mm)Net Weight: 2-1/2lbs. (1.1kg)Motor: 1/2hpAir Inlet Thread NPT: 1/4""Air Hose I.D. Size: 3/8"" (10mm)Avg. Air Consumpt.: 7cfmAir Pressure: 90-120psi