OverDrive bits are the cleanest drilling value-priced bit in the market! Originally designed for battery powered tools to extend battery and motor life, these fast cutting bits also perform exceptionally well in drill presses. Drill up to 10x more holes per charge over comparable bits. Brad points start accurately on-target and allows for easy bit removal in blind holes and counterbores. 1/4" quick-change shank. 6.5" OAL. OverDrive 6pc Set comes with 1/2", 5/8", 3/4", 7/8", 1" and 1-1/4".