GRENPRO Cobalt Step Drill Bit, 1/4"-3/4" Large Step Bit, M35 HSS Impact Tough Step Bits for Metal, 1/2" Shank Unibit Step Drill Bits, Stainless Steel,

GRENPRO Cobalt Step Drill Bit, 1/4"-3/4" Large Step Bit, M35 HSS Impact Tough Step Bits for Metal, 1/2" Shank Unibit Step Drill Bits, Stainless Steel,

M35 HSS COBALT STEP DRILL - GrenPRO drill bits Specially designed for Metal Sheet/Wood/Plastic/Aluminum/Copper TiAlN COATING - Our step drill bit surface hardness enables 68% faster drilling efficiency and 450% longer lifespan than conventional drills Size: 9 step sizes Includes 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4" step drill bit for metal can make multiple holes of different diameters in materials such as stainless steel, aluminum, wood, plastic sheets, etc UNIVERSAL 1/4" HEX SHANK - Secure grip for lithium-ion drills/hand drills/bench drills with anti-slip laser etching(1/4"=6.35 mm) WARRANTY - Contact GRENPRO for instant replacement with no questions asked GRENPRO Step Drill Bit for Metal Set, 1/4"-3/4" Large Step Bit, M35 HSS Impact Tough Step Bits for Metal, 1/2" Shank Unibit Step Drill Bits, Stainless Steel, Aluminum, Wood can be Cut with these Drill Bits