With a head size of just 3-3/4" Milwaukee M12 Right Angle Drill/Driver still delivers 100 in-lbs of torque. Featuring an electronic clutch, with 12 torque settings, and an L.E.D. indicator for fastening with complete control. The M12 REDLITHIUM Battery Pack (not included) delivers more work per charge over the life of the battery. The onboard gauge helps you monitor the charge precisely, so there less downtime on the jobsite, and a built-in LED Light illuminates the work surface. An extended paddle switch gives you ultimate comfort and convenience during prolonged use.