Bosch 37614-01 14.4-Volt 1/2-Inch Brute Tough Litheon Drill/Driver with 2 Fat Batteries 1/2" Metal Chuck for increased durability Features 0-375/0-1,700 RPM and 600 in lbs of torque Features Bosch Durasheild Housing and Uni-body Power Train to withstand real world conditions Bosch Litheon Batteries - State-of-art Lithium-ion battery technology coupled with Bosch's proprietary ECP (Electronic Cell Protection) system guarantees the optimal performance of tool and batteries even for tough work conditions. 25 Position Clutch