The M18™ FUEL™ 2-tool Combo kit with ONE-KEY™ is the highest performing hammer drill and impact driver in the industry with the added control of ONE-KEY™. The kit includes the M18™ FUEL™ 1/2 in. Hammer drill/driver w/ ONE-KEY™ (2806-20) that delivers up to 60% more power, up to 1.5 in. Shorter length and up to 2X faster speed under heavy load. At 1,200 in-lbs of torque and only 6.9 in. in length, it has the power for demanding applications and ability to access tight spaces. The hammer drill's anti-kickback technology increases control in bind-up situations and reduces unwanted shut-downs, with the added benefit of controlling sensitivity preferences. Also included is the M18™ FUEL™ 1/4 in. Impact driver w/ ONE-KEY™ (2857-20). It is the fastest, most compact, and most powerful impact driver in its class. With up to 2,000in-lbs of torque, it delivers up to 30% faster driving speed at only 4.59 in. in length, with up to 25% more power. The M18™ REDLITHIUM™ battery packs deliver more work per charge and more work over the life of the packs than competitors. Both tools are ONE-KEY™ compatible, allowing users to customize, track and manage their tool for increased productivity. Using the tool's tracking functionality, if ever lost or stolen, lock it out to protect your investment.