The 2497 - 22 M12 cordless 2-tool Combo kit includes the M12 3/8 in. Hammer drill/driver and the M12 1/4 in. Hex impact driver (2450-20). 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 Red Lithium, the M12 cordless system offers unmatched power, speed, and tool belt portability. Each tool in the Milwaukee 2497-22 kit has a built-in power gauge that indicates the remaining charge in its lithium-ion battery, which charges in as little as 30 minutes on the included charger. These tools also come with a carrying case for added convenience. Cordless tools powered by Red Lithium batteries deliver more torque, more power, and longer run-time than the competition.