The 2491-22 M12 cordless 2-tool combo kit includes the 1/4 in. Hex Impact Driver (2450-20) and the Hackzall Recip Saw (2420-20). The innovative M12 cordless system is designed to deliver the power and torque required for professional applications, in a size that reaches the tightest and toughest places. Powered by Lithium Ion, the M12 cordless system offers unmatched power, speed, and tool belt portability. With purchase of a 2491-22 receive a free M12 2.0 Ah Compact Battery.