The 3/8″ driver W5133 and 1/2″ drive W5153 impact wrenches enhance the features you demanded: increased durability with stronger internal parts and increased access with its tapered front end. This next generation compact impact wrench packs 365 ft.-lbs. of MAX torque in a cordless compact unit that weighs only 5.3 lbs. (with a BL2022 battery). Tested by real technicians, ready to tackle real work.