The M18™ Cordless 4-Tool Combo Kit includes the M18™ 1/2" Hammer Drill / Driver, M18™ Sawzall® Recip Saw, M18™ 1/4" Hex Impact Driver. 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 system delivers more torque, more power, and longer run-time than the competition.