The max torque is 370 Ft-lbs(500N.m) and the speed is 3200RPM. Equipped with a high spec powerful motor, Silvel cordless impact wrench can help you easily loosen or tighten various types of bolts or nuts, including nuts or screws for truck, automobile, scaffolding, etc. Stepless variable speed control can be done by on/off switch for accurate torque control. The maximum speed is 3200RPM to meet various work requirements. Powered by the max, 24.0Ah Lithium-ion batteries for strong power and endurable run time, which is supplied with the fast battery charger, simple and convenient to charge. Lightweight tools designed to fit the users' needs, Soft grip handle for added comfort and total control without heavy fatigue while using. 1/2 impact wrench is more motivated in tough work. It even has a built in Led light for those hard to see areas or if using outside in the dark. It will stay on for approximately 5 seconds after releasing the trigger.