Premium specification drill bits with left-handed spiral flute. 8% Cobalt with advanced TiAln coating to reduce friction and heat generation. Can be used both on Rotary and Impact settings. To be used for drilling the pilot holes in broken bolts and seized studs ready for VersaDrive® Bolt extractors. Designed to run in reverse to help loosen the seized item at the same time as creating the pilot hole. Premium 8% Cobalt with advanced TiAln coating For use on hardened bolts & studs Loosen seized bolts Impact Rated for high-speed operation Drill pilot holes ready for ImpactaBite bolt extractors to be inserted VersaDrive patented shank & adapters provide multiple modular solutions Use on impact to prevent dangerous kickback caused by handheld rotary tools