1. Square drive: 1' ' 2. Capacity bolt dia.: 1.77" / 45mm 3. Free speed: 4000r. P. M 4. Max. Torque: 1912ft-lb/ 2600N. M 5. Overall length: 17.32" / 440mm 6. Air Inlet: 1/ 2" 7. Air Hose: 1/ 2" 8. Net weight: 26.03lbs/ 11.78kgs 9. Packing: 2PCS