The MILWAUKEE® M18 FUEL™ with ONE-KEY™ 2-Tool Combo Kit is the industry's most powerful hammer drill and impact driver combo, with the added benefit of ONE-KEY™ technology. This kit includes the most powerful drill, including AUTOSTOP™ control mode for enhanced safety, and the fastest impact driver. It includes an M18 FUEL 1/2" Hammer Drill, an M18 FUEL 1/4" Hex Impact Driver, (2) M18 REDLITHIUM™ XC 5.0Ah Battery Packs, an M18/M12 Charger, and a carrying case. The M18 FUEL™ 1/2" Hammer Drill Driver is the most powerful and compact drill in the industry. The POWERSTATE™ Brushless Motor provides the most power under load to complete 2-9/16" self-feed holes in dense materials, ensuring increased productivity and capacity. At only 6.9" in length, it is the most compact driver in its class. The AUTOSTOP™ control mode offers enhanced safety by preventing over-rotation during binding, with the best reaction time in the industry. Users can customize the AUTOSTOP™ control mode with low, medium, and high sensitivity settings. The M18 FUEL™ 1/4" Hex Impact Driver is the MOST POWERFUL and FASTEST impact driver, featuring OPTIMAL TRIGGER CONTROL. The POWERSTATE™ Brushless Motor delivers unmatched power for a full range of uses, across the widest variety of applications. Increase your productivity on the job site with the fastest driving speed, without loss of power or control. The REDLINK PLUS™ Intelligence system provides OPTIMAL TRIGGER CONTROL by applying smooth acceleration for small screws to prevent stripping or damaging materials. Both tools are compatible with ONE-KEY™ functionality, allowing you to customize, track, and manage your power tools for increased productivity. In case of loss or theft, the tool tracking feature enables lockout to protect your investment. The M18 FUEL™ with ONE-KEY™ 2-Tool Kit is part of the M18 system and is fully compatible with over 250 tools.