HMT VersaDrive TurboTip Impact Drill Bit InsertFoam Set, 6, 8, 10, 12mmVersaDrive TurboTip Impact drill bits are stepped tip bits that drill at twice the speed of standard bits without the need for pilot drilling while cutting a perfectly round hole. Turbocharge your drilling performance by using this revolutionary tool with an Impact Wrench or Impact Driver. Double hardened and titanium coated for faster drilling & reduced wear. VersaDrive TurboTip drill bits have a patented non slip, Hex shank suitable for use in any