With a powerful impact wrench you'll have no trouble undoing those stubborn wheel nuts. No more back pain from straining with a wheel brace. An air impact wrench takes all the hard work out of changing the tyres on your car. The impact function combined with the high torque delivered from a pneumatic impact wrench is sure to loosen the most stubborn of nuts and bolts. Using a torque extension bar together with the impact wrench will ensure that you don't overtighten and damage the fastener. All Cocraft air impact wrenches come with a 5-year guarantee.