The 2799-22CX M18™ 2-Tool Combo Kit includes the 1/2” Compact Brushless Hammer Drill Driver (2702-20) and the 1/4” Hex Brushless Impact Driver (2750-20). The M18™ Cordless System's patented technologies and electronics, innovative motor design, and superior ergonomics provide the most efficient blend of power, weight and performance in the industry. The M18™ ½” Compact Brushless Hammer Drill/Driver is the Most Compact 18v drill on the market and delivers Over 50% Longer Run-Time than drills with brushed motors. The M18™ 1/4” Hex Brushless Impact Driver is the Most Compact Impact Driver in its class and delivers Over 50% Longer Run-Time than Impact Drivers with brushed motors. Both tools feature Milwaukee® built brushless motors, REDLINK™ Electronics, and REDLITHIUM™ batteries that provide more efficient power delivery, for fewer trips to the charger. This kit includes (1) REDLITHIUM™ XC4.0 battery for maximum performance and 2X longer run-time. It also includes (1) REDLITHIUM™ 2.0 battery, which is compact and light weight, ideal for fastening applications.