GRENPRO Step Drill Bit for Metal, 3/16" - 7/8" Four Spiral Flute Cobalt 12 Step Drill Bits, 1/4" Hex Shank Step Bit for Stainless Steel, Plastic,

GRENPRO Step Drill Bit for Metal, 3/16" - 7/8" Four Spiral Flute Cobalt 12 Step Drill Bits, 1/4" Hex Shank Step Bit for Stainless Steel, Plastic,

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: 12 step sizes Includes 3/16",1/4", 5/16", 3/8", 1/2", 9/16", 5/8", 11/16", 13/16", 7/8". 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, 3/16" - 7/8" Four Spiral Flute Cobalt 12 Step Drill Bits, 1/4" Hex Shank Step Bit for Stainless Steel, Plastic, Copper, Aluminum, Wood, PVC, Hardened Steel