Open IRWIN drill bit case showing 29 cobalt bits arranged by size. Smaller bits are positioned in front, larger ones in back. The blue plastic case features a hinged lid and secure slots for each bit, designed for easy access and transport.
Front view of IRWIN 29-piece cobalt drill bit set in retail packaging. Text highlights 1/16" to 1/2" sizes in 1/64" increments, 135° split point tips, and a removable cartridge for jobsite portability. Case is designed for durability and organization.
Packaged IRWIN Unibit Cobalt Step Drill Bit Kit in a clear plastic case. The front highlights features like removable cartridges, rubber overmolding, and cobalt construction. Visual instructions show how to select, drill, and store bits.
Open IRWIN drill bit case showing 29 cobalt bits arranged by size. Smaller bits are positioned in front, larger ones in back. The blue plastic case features a hinged lid and secure slots for each bit, designed for easy access and transport.
Front view of IRWIN 29-piece cobalt drill bit set in retail packaging. Text highlights 1/16" to 1/2" sizes in 1/64" increments, 135° split point tips, and a removable cartridge for jobsite portability. Case is designed for durability and organization.
Packaged IRWIN Unibit Cobalt Step Drill Bit Kit in a clear plastic case. The front highlights features like removable cartridges, rubber overmolding, and cobalt construction. Visual instructions show how to select, drill, and store bits.
IRWIN

IRWIN 29-Piece M35 Cobalt Alloy Steel Master Drill Bit Set (3018002) for drilling Hardened Steel, Stainless Steel, and Cast Iron

Only 2 left
SKU: 3018002
$127.99 USD

Description

Stop Breaking Bits. Power Through the Toughest Metals.

Are you tired of smoking, dulling, and breaking drill bits when faced with stainless steel, hardened bolts, or cast iron? It's time to step up to the professional's choice. The IRWIN 29-Piece M35 Cobalt Steel Drill Bit Set is engineered for one purpose: to conquer the most difficult and abrasive metals. Built for extreme heat and wear resistance, this master set powers through where standard high-speed steel bits fail, saving you time, money, and frustration. 

Key Features & Professional Benefits

  • Drill Through the Toughest Metals: Constructed from industrial-grade M35 Cobalt Steel (containing 5% cobalt), these bits are engineered for extreme heat and abrasion resistance, allowing you to effectively drill into hardened materials without premature failure.

  • No-Walk, Precision Starts: The 135-degree split point tip is designed to bite into metal immediately on contact. This eliminates frustrating bit "walking" and the need for a center punch, so you can start your hole exactly where you want it, every time.

  • Built for Strength and Durability: Featuring a heavy-duty web construction, these bits are designed for increased rigidity and strength, reducing flex and preventing breakage under the high torque needed for professional metal drilling.

  • Big Bit Versatility: Bits larger than 3/8-inch feature a reduced shank, allowing you to use the full range of this master set in a standard 3/8-inch drill chuck without needing to upgrade your drill.

  • Professional Jobsite Storage: The rugged metal index case features a protective rubber overmold, removable bit cartridges for portability, and a convenient tap and drill selection chart printed inside.

What's Included:

  • (29) IRWIN M35 Cobalt Steel Drill Bits from 1/16-in. to 1/2-in.

  • (1) Metal Index Carrying Case

Stop fighting with hard metals. Add the IRWIN M35 Cobalt Drill Bit Set to your professional toolkit and drill with power and confidence.

Technical Specifications

  • Model: 3018002

  • Material: M35 Cobalt Steel (5% Cobalt)

  • Piece Count: 29

  • Size Range: 1/16-inch to 1/2-inch in 1/64-inch increments

  • Point Angle: 135-Degree Split Point

  • Shank: Round, with reduced shanks on bits larger than 3/8-inch

  • Case: Metal Index Case with Rubber Overmold and Removable Cartridges

FEATURES