The 1/2 Drill Driver is a powerful drill and compact solution. Brushless motor delivers the power under load to complete 2-9/16 Self-Feed holes in dense materials for increased productivity and capability. The 1/4 Hex Impact Driver is features a fast driving speed without sacrificing power or control.Brushless Motor delivers the power to complete the widest range of applications of any hammer drill driverBrushless motor delivers unmatched power for full range of capability to complete the widest variety of applicationsIncrease productivity on the jobsite with the fastest driving speed of any impact driver without sacrificing power or controlFastest Drilling and Driving applications under loadMechanical Clutch for consistency in driving a wide range of fasteners