Bosch DDS181-102L 18-Volt Lithium-Ion 1/2-Inch Compact Tough Drill/Driver Kit with High Capacity Battery, Charger and L-BOXX-2 Four-pole high-performance motor for maximum power in the most compact size New patented gear train and clutch enables most compact design in its class and lightest weight Flexible power system--both DD and HDD are compatible with every 18-volt lithium-ion Bosch battery Ergonomic grip zone--small diameter enables better gripping and greater comfort Includes L-BOXX-2 for easy stack-able storage