It offers the sheer power and performance features to tackle the toughest jobs with ease - as well as proven durability and economy. Specifications: Drive – ½ in. Torque Range – 25-300 ft.-lbs/34-408 Nm. Max. Torque – 425ft.-lbs/578 Nm. Blows per Min – 1200. Free Speed – 8000 rpm. Standard Blot Cap – 9/16 in. /14mm. Net Weight – 5.8 lbs./2.63 kg. Overall length – 7.3 in. /185mm. Avg. Air Consumption – 4.2 cfm/ 119 1/min@ Load – 22cfm /623 1/min. Air Inlet – ¼ in. Minimum Hose Size – 3/8 in. /10mm.