Bosch DDS181-02 18-Volt Lithium-Ion 1/2-Inch Compact Tough Drill/Driver Kit with 2 High Capacity Batteries, Charger and Case (Discontinued by Manufacturer). 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. Includes two Slim Pack 2.0 Ah HC (high-capacity) batteries Ergonomic grip zone--small diameter enables better gripping and greater comfort Modified orientation relative to handle increases comfort