The JET Tools R12 series of Impact Wrenches feature composite housing, which improves balance and reduces weight, the company says. The tools have a twin-hammer impact mechanism that improves durability, and a one-hand forward/reverse switch. With four-position speed selection and full-reverse power, the tools are available in 3/8" (No. JAT-120), 1/2" (No. JAT-121) and 3/4" (No. JAT-123), offering 400 ft/lbs, 750 ft/lbs and 1,300 ft/lbs, respectively. A 1/2" with a 2" extension (No. JAT-122) is also available.