The new Sunex SX4345 1/2" Drive Impact Wrench delivers the power and dependability of all Sunex HD products. Its patented Quiet Tech exhaust system makes it the quietest impact wrench in its class, yet it produces 750 ft/lbs of power and 1,100 ft/lbs of breakaway torque. The variable speed trigger controls both power and speed range, and the one hand forward/reverse keeps one hand free during directional changes. Weighing only 4.3 lbs, the wrench is light enough to use all day yet can loosen even the toughest of fasteners.