M18 cordless 1/2″ hammer drill driver kit, Milwaukee 4-pole frameless motor delivers 550 inlbs of peak torque, 0-450/0-1,700 rpm & 29,000 bpm, compact & ergonomic design: 8-1/2″ length, digital power management overload protection prevents damage to the tool & battery in abusive situations, all metal gear case, all metal 1/2″ single sleeve ratcheting chuck provides maximum durability & bit retention, includes: 2 each xc high capacity lithium-ion batteries, 1 hour charger & kitbox.