Ergonomic design handle,central of gravity is more steady,operate comfortably and easy special alloy steel strike structure,strong,anti-fatigue,super long life,excellent torque/weight ratio;

Used for big truck repair,pipe pile factory that requires big torque screw bolt's assembly;

A knob has 3 position forward and reverse rotation adjust function,used for different torque requirement,easy operation;

45 degree air inlet design,prohibit hose twist from working,and operating easily;

Longer drive shaft,satisfy limited and concave place's screw bolt assembly.