HMT 328015-SET1 Versadrive TurboTip Drill Bit, ImpactaTaps & 1/2\" Impact Adapter The HMT 328015-SET1 contains 4 x VersaDrive TurboTip Impact drill bits, 4 x ImpactaTaps and 1 x 1/2\" Impact Wrench Adapter. TurboTip 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. VersaDrive ImpactaTaps are the first and only range of taps that are suitable to be driven by impact wrenches and impact drivers, providing at least 15x faster performance than tapping by hand. Features: Patented Drill Point 50% Faster Drilling with 30% less pressure Incredible Finished Hole quality Instant drill start with no slipping No \'snatch\' when drill bit breaks through Ground Flutes create the perfect tapped hole Safer tapping with minimal kickback Specially hardened for impact wrench use High grade tool steel for high accuracy & long life Goldmax low friction titanium coating to stop burn out High strength, non slip shank design Fantastic Tool Life Fully Impact Rated on structural steel For fastest performance use on impact wrenches & impact drivers Check the minimum torque requirement Suitable for use on Stainless Steel and harder materials if used at low RPM in rotary tools Tapping Stainless Steel requires higher impact torque Use appropriate lubrication and correct RPM to achieve long tool life Specification: Set contains: 6.8, 8.5, 10.5 & 14mm TurboTip Drill Bits M8, M10, M12, M16 ImpactaTaps 1/2\" Impact Wrench Adapter