【Heavy Duty for Stainless Steel】 The Cobalt Drill Bits(1.3243 STEEL) can drill 5X longer life and 2X faster. This Drill bits is heavy duty for Stainless Steel, Hard 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! [Total 25 Steps︱A Case] from 1/8" to 1/2", 3/16"to 7/8". with A PACKING CASE [1/4" Hex Shank︱3/8"Tri-Flat Shank︱2-Straight-Flute] Fits into power tools chuck securely and eliminates slip.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, 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 OXMUL M35 Cobalt Step Drill Bit Set - Professional Heavy-Duty Metal Drilling Solution
Ultimate Metal-Drilling Powerhouse (2-Piece Set)
The OXMUL Z204_205 Cobalt Step Drill Bit Set delivers industrial-grade performance for professionals tackling stainless steel, hardened metals, and tough alloys. This 2-piece set features:
19 total steps covering 1/8" to 1-3/8" holes
M35 Cobalt Steel (1.3243 Grade) with 5X longer lifespan vs standard bits
2X faster drilling speed through stainless steel and hard metals
Included rugged case for tool protection and portability
Military-Grade Construction & Precision Design
✔ Cobalt-Infused Steel (5% Cobalt Content) - Withstands extreme heat (1100°F+) without losing hardness
✔ Dual Shank Options:
3/8" Tri-Flat Shank - Maximum grip for high-torque drilling
1/4" Hex Shank - Quick-change compatibility with impact drivers
✔ 2-Straight Flute Design - Efficient chip removal prevents clogging
✔ Precision-Ground Steps - Laser-measured for accurate hole sizing
✔ Dimensions:
Short Bit: 1/8"-1/2" (13 steps) - 4.7" total length
Long Bit: 1/4"-1-3/8" (6 steps) - 6.3" total length
Professional Applications & Usage Guide
Where Pros Use It:
Automotive Shops: Exhaust systems, brake rotors, suspension work
Metal Fabrication: Stainless countertops, aluminum frames, steel brackets
HVAC/R: Ductwork, copper piping, galvanized steel
Heavy Equipment: Tractor buckets, loader arms, hydraulic repairs
Pro Usage Tips:
For Stainless Steel:
Use 300-500 RPM with sulfurized cutting oil
Apply steady pressure - let the cobalt teeth do the work
For Aluminum/Wood:
Higher 800-1200 RPM for cleaner cuts
No lubricant needed (except for deep holes)
Always:
Secure workpiece with clamps
Clear chips frequently
Use drill press for precision work
Why Professionals Choose OXMUL
"This isn't just another drill bit set - it's the last set you'll ever need. The M35 cobalt construction eats through stainless steel that destroys ordinary bits, while the precision-ground steps deliver cleaner holes than hole saws. The included case means your investment stays protected between jobs."
Bonus Features:
120-Day Guarantee - We stand behind our tools
Rugged Storage Case - Keeps bits organized and protected
German Steel Quality - Precision engineered for demanding professionals
WARNING:
Requires 800W+ power tool for optimal performance
Not for use with plexiglass or ceramic
Always wear safety glasses when metalworking
Ultimate Metal-Drilling Powerhouse (2-Piece Set)
The OXMUL Z204_205 Cobalt Step Drill Bit Set delivers industrial-grade performance for professionals tackling stainless steel, hardened metals, and tough alloys. This 2-piece set features:
19 total steps covering 1/8" to 1-3/8" holes
M35 Cobalt Steel (1.3243 Grade) with 5X longer lifespan vs standard bits
2X faster drilling speed through stainless steel and hard metals
Included rugged case for tool protection and portability
Military-Grade Construction & Precision Design
✔ Cobalt-Infused Steel (5% Cobalt Content) - Withstands extreme heat (1100°F+) without losing hardness
✔ Dual Shank Options:
3/8" Tri-Flat Shank - Maximum grip for high-torque drilling
1/4" Hex Shank - Quick-change compatibility with impact drivers
✔ 2-Straight Flute Design - Efficient chip removal prevents clogging
✔ Precision-Ground Steps - Laser-measured for accurate hole sizing
✔ Dimensions:
Short Bit: 1/8"-1/2" (13 steps) - 4.7" total length
Long Bit: 1/4"-1-3/8" (6 steps) - 6.3" total length
Professional Applications & Usage Guide
Where Pros Use It:
Automotive Shops: Exhaust systems, brake rotors, suspension work
Metal Fabrication: Stainless countertops, aluminum frames, steel brackets
HVAC/R: Ductwork, copper piping, galvanized steel
Heavy Equipment: Tractor buckets, loader arms, hydraulic repairs
Pro Usage Tips:
For Stainless Steel:
Use 300-500 RPM with sulfurized cutting oil
Apply steady pressure - let the cobalt teeth do the work
For Aluminum/Wood:
Higher 800-1200 RPM for cleaner cuts
No lubricant needed (except for deep holes)
Always:
Secure workpiece with clamps
Clear chips frequently
Use drill press for precision work
Why Professionals Choose OXMUL
"This isn't just another drill bit set - it's the last set you'll ever need. The M35 cobalt construction eats through stainless steel that destroys ordinary bits, while the precision-ground steps deliver cleaner holes than hole saws. The included case means your investment stays protected between jobs."
Bonus Features:
120-Day Guarantee - We stand behind our tools
Rugged Storage Case - Keeps bits organized and protected
German Steel Quality - Precision engineered for demanding professionals
WARNING:
Requires 800W+ power tool for optimal performance
Not for use with plexiglass or ceramic
Always wear safety glasses when metalworking