3/8'' Single sleeve Ratcheting Chuck - Maximum versatility and grip. 3 3/4'' Head Length - Great for working in tight spaces. Extended Paddle Switch - Provides convenience and comfort. Electronic Clutch - 11 Settings plus drill mode for complete control. Built In LED's - Illuminates work surface and indicates clutch out With a head size of only 3.75", the M12 Cordless 3/8" 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.