The Makita 18-Volt LXT Lithium-ion Cordless 1/2 in. Impact Wrench (model XWT04M) delivers high torque impact power with a 1/2 in. square drive that will fit impact-rated socket sets. The versatile XWT04M packs plenty of torque for a wide range of fastening and loosening tasks and is a powerful and convenient substitute for air powered and AC wrenches. It?s part of Makita?s expanding 18-Volt Lithium-ion series, the world?s largest cordless tool line-up powered by an 18-Volt Lithium-ion slide-style battery. Makita 18-Volt Lithium-ion batteries have the fastest charge times in their categories, so they spend more time working and less time sitting on the charger.