Makita XWT04MB18V LXT Lithium-Ion Cordless High Torque 1/2" Sq. Drive Impact Wrench Kit (Discontinued by Manufacturer) Makita-built motor delivers 325 ft.lbs. of Max Torque, with 1,600 RPM and 2,200 IPM for superior fastening power Shock absorbent handle protects battery housing for extra durability Rocker switch for forward/reverse operation Rubberized soft grip handle provides increased comfort on the job 18-Volt LXT Lithium-Ion 4.0Ah battery BL1840B, features an integrated L.E.D. battery charge level indicator (for MB kits)