M35 Step Drill Bit for Metal, 1/4" to 1-3/8", Cobalt Bits, Heavy Duty for Stainless Steel, Metal, Aluminum, Copper, 6-Steps. 204

Industrial-Grade Cobalt Step Drill Bit for Hard Metals The OXMUL M35 Cobalt Step Drill Bit (1/4" to 1-3/8") is a heavy-duty, precision-engineered tool designed for stainless steel, hardened metals, and tough alloys. Built with 7% cobalt steel and a black oxide coating, this 6-step bit delivers 6X longer life and 2X faster cutting than standard HSS bits. Whether you're a mechanic, metalworker, or serious DIYer, this industrial-grade step bit chews through stainless steel, aluminum, and copper with ease. Rugged Construction & High-Performance Design M35 Cobalt Steel (7% Cobalt) – Harder & more heat-resistant than standard HSS, perfect for stainless steel, galvanized metal, and iron. Black Oxide Coating – Reduces friction, extends bit life, and prevents corrosion. Tri-Flat Shank (3/8") – Locks securely in drill chucks, preventing spin-out under heavy load. 2-Straight Flutes – Clears metal chips faster, reducing overheating and clogging. 6 Graduated Steps (1/4" to 1-3/8") – Covers common hole sizes for plumbing, fabrication, and automotive work. Heavy-Duty Applications – Where & How to Use It ✔ Stainless Steel Fabrication – Drills sinks, exhaust pipes, brackets without dulling. ✔ Automotive & Machinery – Perfect for tractor buckets, loader arms, brake rotors, and lug bolts. ✔ HVAC & Plumbing – Cuts clean holes in copper tubing, steel pipes, and PVC. How to Use (Pro Tips): Clamp metal securely – Prevents vibration for cleaner holes. Start slow, then increase speed – Best for stainless steel & hard metals. Use cutting oil – Extends bit life and reduces heat buildup. Clear chips frequently – Prevents clogging for smoother drilling. Built for Pros – No-Nonsense Performance This OXMUL M35 Cobalt Step Bit is not a cheap drill bit—it’s a long-term investment. Engineered for welders, metalworkers, and mechanics, it outlasts standard bits and drills stainless steel like butter. No more swapping bits or burning through flimsy drills—get the job done faster, cleaner, and with less hassle.

• M35 COBALT BIT / HEAVY DUTY for SS /1/4" to 1-3/8"
• 【Heavy Duty for Stainless Steel】 The Cobalt Drill Bits can drill 6X longer life and 2X faster. This Drill bits is heavy duty for Stainless Steel, Metal, Galvanized Steel, Aluminum,Iron, Wood, PVC and Copper. This step bit is tough,sharp and can drill many holes on hard metal like a work horse
• 【M35 Cobalt Bits】 Prefect for Stainless Steel/Metal Sheet/Wood/Plastic/Aluminum Sheet/Copper and other metal sheets. This Drill bit can successfully drill more and more holes easily into Stainless Steel plate like knife through butter
• 【6 Steps︱2-Straight-Flute︱3/8" Shank】 6 steps: from 1/4", 7/8", 1-1/8", 1-7/32", 1-1/4" to 1-3/8". 2-Straight-Flute:Clears Chips faster
• 【A Work Horse】This spiral shaped step bit is a work horse. Easily drilled through the steel platform of your zero-turn mower, stainless steel sink, cold rolled steel, lug bolt, old rack, iron rotors, tractor bucket, washer, heavy steel loader bucket was made for a tractor, hydroponics tubing,water pipe, cabinet