Air Impact Wrench] [basic instructions enormous strength and longer life make this wrench become exhaust system, air conditioning, radiators, body and a popular choice of professional tools hull workshop, fitter work. The tool is still on the market's most powerful 3/8 "? Handle type tool, no competitors, it has all the advantages of a single hammer impact mechanism for the removal and replacement sizes up to 7/16"? (M11) bolt . [Pneumatic impact wrench] Features ■ Reverse maximum torque of 100 ft -??? Lb (? 244 Nm) ■ Large hammer mechanism ■ The pressure lubrication system ensures longer life ■ Power regulator ■ ■ compact body ■ ■ operating comfort grip and lightweight exhaust, avoid gas [Air Impact Wrench] Specification drive square head size (inch):?? 3/8 maximum torque (Nm):?? 205 Torque Range (Nm):?? 27- 170 No-load speed (rpm):?? 10200 beating mechanism:?? Shuangchui average gas consumption (m ^ 3 / ^ min):?? 0.311 intake port size (inch):??? NPT1 / 4 recommendation trachea the inner diameter (mm):?? 10 Working Pressure (kgf / cm ^ 2 / ^):?? 6.3 tool length (mm):?? 152 Weight (kg):?? 1.31?