The 2798-22CT M18 2-Tool Combo Kit includes the 1/2-inch Compact Brushless Drill Driver (2701-20) and the 1/4-inch 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-inch Compact Brushless Drill/Driver is the Most Compact 18V drill on the market and delivers Over 50% More Run-Time than drills with brushed motors. The M18 1/4-inch Hex Brushless Impact Driver is the Most Compact Impact Driver in its class and delivers Over 50% more 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.