Bosch HDS182-01L 18-volt Brushless 1/2-Inch Compact Tough Hammer Drill/Driver with 4.0Ah Batteries, Charger and L-Boxx-2 Brushless Motor: Up to 2x the motor life, superior efficiency for longer runtime and no maintenance Advanced Electronics: Electronic motor and cell protection help prevent overheating and overloading for extended tool life and runtime Most Compact Head Length: Most compact head length in its class for easy control in tight spaces Dura shield Housing: Designed and tested to withstand multiple 10 ft. drops 4x Bit Tip Holder: Convenient on-tool bit storage for magnetic bit holder