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 Specifications: Chuck Capacity: 3/8 Free Speed: 1,800rpm Overall Length: 7-7/8 (200mm) Net Weight: 2-1/2lbs. (1.1kg) Motor: 1/2hp Air Inlet Thread NPT: 1/4 Air Hose I.D. Size: 3/8 (10mm) Avg. Air Consumpt.: 7cfm Air Pressure: 90-120psi