Bosch 17614-01 14.4-Volt 1/2-Inch Brute Tough Litheon Hammer Drill/Driver with 2-Fat Batteries Features 0-375/0-1,700 RPM and 25,500 BPM. 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. 1/2-Inch Metal Chuck for increased durability LED Light is great for dark or enclosed areas