Four Spiral Flute Cobalt Step Drill Bit,1/4"-1-1/8"Impact Unibit Pro Max Step Bit Set,1/4" Hex Shank M35 for Metal Carbon Steel, Stainless Steel, Wood, 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: Includes from 1/2" to 1-1/8". Popular Size 1/2", 7/8", 1-1/8" labeled, step drill bit for metal can make multiple holes of different diameters in materials such as stainless steel, aluminum, wood, plastic sheets, etc
+
+
Overview
Specs
Reviews
Any questions? Our AI beta will help you find out quickly.
Try me now
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
Learn more about the Detailed Specifications
Additional Information
First Listed on Newegg
June 12, 2026
There are no reviews yet.
Do you own this product?
Warranty & Returns
Warranty, Returns, And Additional Information
Warranty
Please contact the Seller directly for warranty information. Warranty information may also be found on the Manufacturer's website.