The 2691 - 22 M18™ cordless lithium-ion 2-tool Combo kit includes the compact driver (2601-20) and the 1/4 in. hex impact driver (2650-20). The M18™ cordless lithium-ion system's patented technologies and electronics, innovative motor design, and superior ergonomics provide the most efficient blend of power, weight and performance in the industry. Powered by RED LITHIUM™, the M18 cordless lithium-ion system delivers more torque, more power, and longer run-time than the competition.