The 2893 - 22 M18™ 2-tool Combo kit includes the 1/2 in. brushless hammer drill driver (2902-20) and the 1/4 in. hex compact brushless 3-speed impact driver (2851-20). 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. brushless hammer drill/driver is the most powerful drill in its class at 725 in-lbs of torque. The M18™ 1/4 in. hex compact brushless impact driver has the fastest application speed its class and delivers 1,600 in-lbs of torque. The 2851 also includes 3-mode drive control allowing unmatched control. Both tools feature Milwaukee® built brushless motors, REDLINK™ electronics, and REDLITHIUM™ batteries that provide more efficient power delivery, for fewer trips to the charger.