1/2" composite industry assembly air torque  wrench 
Specification
Square drive (inch):1/2" or 3/8"
Capacity Bolt Size (mm):M24
Free Speed (rpm):10000rpm
Max Torque (Nm  ft-lb):650Nm  480ft-lbs
Overall Length (mm):120mm 
Air Hose (I.D):3/8"
Air Inlet (PT):1/4"
Air Consumption (cfm L/min):4cfm   113L/min
Net Weight (lbs/kgs):2.60lbs  1.12kgs
Features:
---Design of mini and more lighter than other . 
---1/2" and/or 3/8" square drive is optional for different working;
---Twin hammer structure;
---Strong instant power;17% stronger than other same style .
---Clear multiple speed; single hand operate more efficient . 
---Handle exhaust with silencer;
---Comfortable grip keeps the hand from hurt;
---Suitable for automobile assembly line, motor cycle assembly line and various assembly lines for screw tightening and loosening.