The M18™ 2-tool combo kit includes the 1/2 in compact brushless hammer drill driver (2702-20) and the 1/4 in hex brushless impact driver (2750-20). The M18™ cordless system 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™ 1/2 in compact brushless hammer drill/driver is the most compact 18v drill on the market and delivers over 50PERC longer runtime than drills with brushed motors. The M18™ 1/4 in hex brushless impact driver is the most compact impact driver in its class and delivers over 50PERC longer runtime 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 Battery for maximum performance and 2X longer runtime. It also includes (1) REDLITHIUM™ 2 Battery, which is compact and light weight, ideal for fastening applications.