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Thirteen cobalt drill bits in graduated sizes in a storage case

StratMet 13pcs Cobalt Drill Bit Set M35 HSS Jobber Length

SKU CH-TGTA-P6TE3

Thirteen M35 cobalt drill bits from 1/16 to 1/4 inch with 135-degree split points for stainless steel and hard alloys

  • MaterialSteel
  • Selling Unit13, Cobalt Drill-13pcs
  • 13-piece set covers 1/16" to 1/4" for wide range of tasks
  • M35 steel with 5% cobalt outlasts standard HSS in hard metals
  • 135° split points self-centre for accurate starts without wandering
  • Spiral flutes eject chips fast to reduce binding and breakage
  • Indexed case keeps every bit organised and ready to grab

13-Piece Cobalt Drill Bit Set

This StratMet set contains 13 M35 cobalt steel jobber-length bits ranging from 1/16" to 1/4". The 5% cobalt alloy delivers hardness that exceeds standard high-speed steel for drilling stainless steel, alloy steel and cast iron. Each bit features a 135° split point for self-centering starts and spiral flutes that clear chips quickly. The indexed case keeps every size organised and ready for selection.

Check Chuck Capacity and Material Compatibility

Verify that your drill chuck accepts shanks up to 1/4" before ordering. The set is designed for hard metals such as stainless steel and cast iron but also handles copper, aluminium, plastic and wood. Ensure your workpiece and machine setup suit jobber-length geometry and the cutting speeds recommended for cobalt tooling.

Sustained Cutting in Hard Alloys

Under continuous drilling in stainless or alloy steel the M35 cobalt resists heat buildup better than ordinary HSS, maintaining edge life through repeated holes. The 135° split point reduces thrust force, lowering the chance of bit walk or breakage during long sessions. Chip evacuation remains consistent thanks to the precision-ground flute profile.

Highlights

  • 13-piece set covers 1/16" to 1/4" for wide range of tasks
  • M35 steel with 5% cobalt outlasts standard HSS in hard metals
  • 135° split points self-centre for accurate starts without wandering
  • Spiral flutes eject chips fast to reduce binding and breakage
  • Indexed case keeps every bit organised and ready to grab

Specifications

BrandStratMet
MaterialSteel
Selling Unit13, Cobalt Drill-13pcs
Part NumberNew-cobalt drill bit-13pcs

Questions about this item

What drill-bit sizes are included in the 13-piece set and is a case supplied?

The set contains 13 jobber-length bits from 1/16" to 1/4" in 1/64" steps and each bit has a dedicated slot in the precision packaging case.

How do I decide between the 13-piece, 29-piece, 60-piece and 115-piece versions?

Choose the 13-piece set for core sizes up to 1/4"; step up to 29, 60 or 115 pieces when you need finer increments, larger diameters or left-hand bits.

What does the 135° split-point angle do for me when drilling stainless steel?

The 135° split point self-centres on hard materials such as stainless steel and alloy steel, while the spiral flutes clear chips quickly to reduce binding and breakage.

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