Working/ Maximum Torque: 420lb.ft (571 Nm)/500lb.ft (680 Nm). Ultimate Torque: 600lb.ft (816 Nm). Combination of composite materials, alloyed metals & twin hammer design result in a lightweight, durable & powerful air impact wrench. Soft grip handle, with downward facing exhaust, makes this wrench comfortable on the hands & ears & limits the circulation of brake dust on wheel applications. Fingertip control of power & direction via lever on rear of wrench. Suitable for professional garage use. Model No. GSA6002