NEIKO 10174A Step Drill Bit 10 Steps 14 to 138 Straight High Speed Steel Titanium Nitride Coated 14 Quick Change Step Bits for Steel Metal Wood Plastic Unibit Cone Drill Bits Two Flute

PREMIUM STEP BIT Each unibit is constructed of 4241 industrial highspeed steel HSS with a titanium nitride coating for durability and strength to punch and drill clean holes in materials like plastic aluminum wood copper stainless steel and other types of sheet metal STEP DRILL BIT FOR METAL It has a 135degree splitpoint tip and features a 2fluted spiral design that automatically deburrs and expands holes for a cleaner drilling process With a split point tip that accelerates cutting speed it prevents walking away from center line of bore drilling holes in metal is fast efficient and clean SPIRAL DESIGN The stepped drill bit with twoflute spiral grooved design cuts smoother than a straight bit with less chatter pulls chips up and out of the hole more effectively runs cooler and handles thicker material and stainless steel better QUICKCHANGE STEP BIT The 14inch hex shank snaps into a quick change chuck or impact driver without tightening of a regular drill chuck Makes for easy convenient and fast bit swaps MULTISIZE DRILL BIT This hole drill bit can drill holes in 10 different sizes 14 38 12 58 34 78 1 118 114 and 138.