With a head size of only 3.75 in., the M12™ cordless 3/8 in. right angle drill driver delivers 100 in-lbs of torque in a compact light weight design. The first sub-compact right angle drill/driver with a spindle lock chuck, the 2415-21 is the most versatile right angle drill/driver in the industry. Built in electronics include an electronic clutch, fuel gauge, speed control and overload protection.