The MILWAUKEE M18 FUEL 1/2 in Hammer Drill Driver w/ ONE-KEY is the Industry's Most Powerful Hammer Drill, delivering the capability to drill the largest holes at high speed into the densest materials. This cordless drill is the Most Compact solution in its class and features AUTOSTOP Control Mode for Enhanced Safety. The POWERSTATE Brushless motor delivers the most power under load to complete 2-9/16 in Self-Feed holes in dense woods for increased productivity. At only 6.9 in length, this is the most compact cordless drill in its class for the best access and maneuverability in tight spaces. The AUTOSTOP Control Mode offers enhanced safety for the operator by preventing over rotation in a bind up with the best reaction time in the industry. With ONE-KEY, users gain the ability to Customize, Track and Manage their tool. Operators can customize the AUTOSTOP im Control Mode with Low, Medium, and High Sensitivity settings. Using the tool's tracking functionality, if ever lost or stolen, lock it out to protect your investment. The REDLINK PLUS intelligence ensures maximum performance and protects from overloads, heating, and over-discharge. The M18 REDLITHIUM battery packs deliver more work per charge and more work over the life of the pack when compared to competitors. The all-metal ratcheting chuck is the best in class. This provides increased grip strength, durability, and corrosion resistance. The M18 FUEL 1/2 in Drill Driver is part of the M18 system which is fully compatible with over 250+ solutions.