Bosch CLPK232-181 18V 2-Tool Combo Kit (Drill/Driver & Impact Driver) with (2) 2.0 Ah Batteries DDS181-02 Compact Tough 1/2 In. drill/driver shortest head in its class 25618 1/4 In. hex impact driver is up to 27 percent faster than tools in its class Two Lithium-Ion SlimPack batteries for long runtime Drill/driver has two speed settings for high torque (0-500 RPM) or high speed (0-1,700 RPM) Drill/driver's four-pole open-frame motor powers heavy-duty drilling