The M18™ 2-tool combo kit includes the 1/2 in compact brushless drill driver (2701-20) and the 1/4 in 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™ 1/2 in in compact brushless Drill/Driver is the most compact 18 V 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 (2) REDLITHIUM™ 2 Battery, which is compact and light weight, ideal for fastening applications.