Klein Tools 25960 Step Drill Bit - TITANIUM NITRIDE COATING from 78 to 138Inch

2 SPIRAL FLUTES remove chips and help pull the bit through material for faster cutting TITANIUM NITRIDE COATING to help dissipate heat for longer bit life 14INCH HEX SHANK for firm positive grip in standard drills and impact drivers SPLIT POINT TIP starts hole cuts quickly and prevents drifting when pressure is added LASERETCHED HOLE SIZE MARKINGS starting at 14Inch for quick size identification MADE FOR STEEL up to 16 gauge wood plastic and aluminum 3 HOLE SIZES from 78 to 138Inch