The Astro Pneumatic 3/8-Inch Drive Mini Wobble Air Ratchet is designed for nut and bolt running. This tool is a vital piece of equipment to speed up productivity. The stubby ultra compact design can fit in the palm of the hand making it perfect for working around tightly packed engines, machinery and equipment. Functionality covers automotive, industrial, agricultural and the serious DIY enthusiast. Specifications: Square Drive 3/8-inch wobble (6mm), Free Speed 240rpm, Overall Length 5-1/2-inch (140mm), Net Weight 0.94-pound (0.43kg), Max. Torque 16-feet/pound, Bolt Capacity 3/8-inch (6mm), Air Inlet Thread 1/4-inch NPT, Air Hose I.D. Size 3/8-inch (10mm), Average Air Consumption: 4cfm, Air Pressure: 90psi, DBA sound level: 91.