Milwaukee’s 2415-21 3/8” Cordless Right Angle Drill/Driver is part of its M12™ line, powered by a 12-volt lithium-ion battery. Its head size is is 3-3/4-inches and its single-sleeve ratcheting chuck 3/8-inches to get in to tight spaces. The 2415-21 has 0-800 rpm variable speed, delivers 100 inch-pounds of torque, and weighs 2.43 pounds. Its price is listed at $236.