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13 black cobalt twist drill bits in metal case

DeWalt 13-Piece M35 Cobalt Drill Bit Set 1.5-6.5mm

SKU CH-VNBT-KJ44T

13-piece M35 cobalt set covers 1.5 mm to 6.5 mm with 135° split points for hard metals

  • MaterialSteel
  • CordlessCorded
  • Color/FinishBlack
  • Item Count12 pack
  • Selling UnitPack
  • Color FamilyBlack
  • M35 cobalt steel with 67 HRC hardness resists heat in hardened steel
  • 135° split point self-centres for accurate starts without a pilot hole
  • Fully ground flutes remove chips efficiently to prevent overheating
  • 13-piece metric range 1.5–6.5 mm covers common tapping and drilling sizes
  • Durable metal case keeps bits organised and protected on the job

13-Piece M35 Cobalt Drill Bit Set

This 13-piece metric drill bit set uses M35 grade high-speed steel with 5% cobalt for hardness up to 67 HRC. It targets tradespeople and DIY users who regularly drill stainless steel, cast iron, titanium alloy or other hard metals. The range covers 1.5mm through 6.5mm including specialist sizes such as 3.2mm and 4.8mm for rivet and tapping work.

Installation and common issues

The 135° split point is self-centering so it starts cleanly without a centre punch, reducing walking on hard surfaces. Fully ground flutes evacuate chips efficiently to limit heat build-up during extended use. The set ships in a metal case with a hex shank design; users should verify their chuck accepts 1/4 inch hex shanks before purchase.

Critical specification

The defining figure is the M35 cobalt alloy rated to 67 HRC, which determines whether the bits withstand the heat of repeated drilling in hardened steel and stainless steel. Buyers who need larger diameters beyond 6.5mm or who require bits for masonry, concrete or wood-only applications should look elsewhere.

Highlights

  • M35 cobalt steel with 67 HRC hardness resists heat in hardened steel
  • 135° split point self-centres for accurate starts without a pilot hole
  • Fully ground flutes remove chips efficiently to prevent overheating
  • 13-piece metric range 1.5–6.5 mm covers common tapping and drilling sizes
  • Durable metal case keeps bits organised and protected on the job

Specifications

BrandDeWalt
MaterialSteel
CordlessCorded
Color/FinishBlack
Item Count12 pack
Selling UnitPack
Color FamilyBlack
Chuck TypeHex
Chuck Size1/4 in
Batteries IncludedYes
Core Bit Cap ConcreteStainless Steel, Brass, Copper, Iron, Aluminum Alloy, Angle Steel, Cast Iron, Wood, Plastic, 5% Cobalt Steel
FeaturesWidely Use

Questions about this item

How do I confirm the 135° split point is self-centering on stainless steel after setup?

The 135° split point design eliminates walking on hard metals like stainless steel, allowing immediate penetration with less pressure and no centre punch needed.

What comes in the metal case and what must I supply?

The case holds 13 fully ground M35 cobalt bits in metric sizes 1.5, 2, 2.5, 3, 3.2, 3.5, 4, 4.5, 4.8, 5, 5.5, 6 and 6.5 mm; you provide the drill with a 1/4 in hex chuck.

Which bit from the 13-piece range should I pick for an M5 tapping job?

Use the 4.8 mm bit for M5 pre-thread holes; the set also includes 3.2 mm for M4 and other metric sizes matched to common rivet and tapping requirements.

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