Our M18 FUEL 2-Tool Combo Kit with ONE-KEY has the highest performing Hammer Drill and Impact Driver in the industry with the added benefit of ONE-KEY technology. This combo kit has the Most Powerful Drill, including AutoStop Control Mode for enhanced safety and the Fastest Driving Impact Driver. Includes an M18 FUEL 1/2 in Hammer Drill, M18 FUEL 1/4 in Hex Impact Driver, (2) M18 REDLITHIUM XC 5.0Ah Battery Pack, with an M18/M12 charger and carrying case. Our M18 FUEL 1/2 in Drill Driver is the Industry's Most Powerful Drill and Most Compact solution. The POWERSTATE Brushless motor delivers the most power under load to complete 2-9/16 in Self-Feed holes in dense materials for increased productivity and capability. At only 6.9 in in length, this is the most compact drill in its class. The AutoStop Control Mode offers enhanced safety for the user by preventing over-rotation in a bind-up with the best reaction time in the industry. Operators can customize the AUTOSTOP Control Mode with Low, Medium, and High Sensitivity settings. Our M18 FUEL 1/4 in Hex Impact Driver is the Most POWERFUL and FASTEST DRIVING impact driver, featuring ULTIMATE TRIGGER CONTROL. Our POWERSTATE Brushless motor delivers unmatched power for a full range of capabilities to complete the widest variety of applications. Increase productivity on the jobsite with the fastest driving speed without sacrificing power or control. REDLINK PLUS intelligence delivers ULTIMATE TRIGGER CONTROL by providing smooth acceleration for small fasteners to prevent stripping of screws or damaging of materials. Both tools are ONE-KEY compatible, allowing you to Customize, Track and Manage your power tools for increased productivity. If your tool is ever lost or stolen, its tracking functionality can lock it out to protect your investment. Our M18 FUEL w/ One-Key 2-Tool Combo kit is part of the M18 system which is fully compatible with over 250+ solutions.