Ningbo wellbo mechanical & electricl co. provide Heavy Duty 1/2 in Air Impact Wrench with Twin hammer mechanism and two clutch design on the high performace air impatc wrench makes it deliered a max torque of 700N.M(520ft-lb) 
Heavy duty aluminum housing make it have a long working life.
Faorward /reverse power regulator with 3 forward power setting and one revers setting for max power.

Application:
Ideal for wide rang of work in home and garage easpecially for  maintenance of car and truck, this tool give you much power to handle the task,make your working more easily and effectively