The M18 Cordless Lithium-Ion 2-Tool Combo Kit includes our M18 Compact Drill/Driver (2606-20) and M18 1/4 in. Hex Impact Driver (2656-20). The M18 cordless system's patented technologies and electronics, innovative motor design, and superior ergonomics provide you with the most efficient blend of power, weight, and performance in its class. The compact drill/driver and impact driver are powered by the REDLITHIUM lithium-ion batteries, delivering more torque, more power, and longer run-time than the competition.