With this 20V Max 1/2" Brushless Drill Driver & Impact Driver Combo Kit (RK1807K2) from Rockwell, you'll be able to take on a multitude of tough tasks. Its brushless motor increases maximum run time up to 50% more per charge over a standard brushed motor. Computer-controlled power distribution improves efficiency and durability by reducing heat, friction and wear. It also boasts the best power-to-weight ratio conquers tough jobs with less fatigue. Plus, the compact design reduces fatigue and allows access in closed spaces.