3/8" industrial composite twin hammer mechanism air impact wrench.
1. Square drive: 3/8".
2. Capacity (bolt size): 1/2"(13mm).
3. Max. torque: 280Ft-Lb (407 N-M).
4. Free speed: 12,000 Rpm.
5. Net weight: 1.2 Kgs(2.64 Lbs).
6. Overall length: 168mm (6 1/2").
7. Air inlet: 1/4"(Pt).
8. Air hose: 3/8"(i.d.).