IBX1680 Features: * Double spur design scribes the hole before the chips are made, producing a cleaner hole and reducing vibration * 6"" overall length * Carded Color/Finish: * Patented micro-groove cutting edge and spurs produce a smoother hole finish Dimensions: * All bits have a 1/4"" hex shank that fits all drills and 1/4"" quick change adapters * 1"" diameter