Drill Bits

Hardened Cobalt Drill Bits

SKU: Cobalt Drill Bit

Stronger than HSS drill bits with better heat resistance. Often used to cut through hardened and abrasive materials.
Available in sizes between 1mm – 13mm.

£6.20£52.70 + VAT

33 Piece Bit Set

33 piece set
Holder included
Extension included
5 types of head included

Payment methods we accept



A cobalt drill bit is a type of drill bit that is made from a high-speed steel alloy containing a significant amount of cobalt. The addition of cobalt to the steel composition enhances the drill bit’s performance and durability, particularly when drilling into hard materials such as stainless steel, cast iron, and titanium.

The main advantage of cobalt drill bits is their superior hardness and heat resistance compared to standard high-speed steel drill bits. The cobalt content increases the bit’s ability to withstand high temperatures generated during drilling, reducing the risk of overheating and prolonging the lifespan of the drill bit.

Cobalt drill bits also have excellent strength and wear resistance, allowing them to maintain their sharp cutting edges for longer periods. This makes them suitable for repetitive or heavy-duty drilling applications.


  • Fully ground high performance drill bits
  • made with 5% Cobalt, 95% Steel
  • Heat & wear resistance
  • For use in handheld rotary drills or pillar drills with a 3-jaw chuck
  • Straight shank
  • Suitable for use on steel, cast-iron, non-ferrous metal and plastic

Additional information

Suitable For

Steel, Cast-Iron, Non-Ferrous Metal And Plastic

Made With

5% Cobalt, 95% Steel

Bit Size Available

1mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 6.5mm, 7mm, 7.5mm, 8mm, 8.5mm, 9mm, 9.5mm, 10mm, 10.5mm, 11mm, 11.5mm, 12mm, 12.5mm, 13mm, Set of 10, Set of 19, Set of 25



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