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Thirteen cobalt drill bits in chrome finish stored in a plastic index box

Olympia Tools 13pcs M35 Cobalt Drill Bit Set 1/16-1/4

SKU CH-JHTP-CX4VS

13-piece M35 cobalt drill bit set covers 1/16 to 1/4 inch in 1/64 increments with 135-degree split points for hardened metal, stainless steel, cast iron, wood and plastic

  • TypeBand Saw Blades
  • MaterialPlastic
  • Selling UnitSet
  • Color/FinishChrome
  • FeaturesWidely Use
  • Item Count2 pack
  • 13-piece set covers 1/16" to 1/4" in 1/64" steps
  • M35 cobalt steel gives 3-5× longer life than standard HSS
  • 135° split point self-centres and cuts harder metals with less force
  • Twist flutes clear chips faster for cleaner holes
  • Includes index storage case for organised workshop access

13-Piece Cobalt Drill Bit Set

This 13-piece set contains M35 cobalt high-speed steel jobber bits ranging from 1/16 inch to 1/4 inch in 1/64 inch increments. Each bit features a 135-degree split-point tip and a twisted flute design for debris removal. The set is supplied in an index storage box for organisation.

For General Workshop Drilling

These bits handle stainless steel, cast iron, copper, aluminium, plastics and wood, making them suited to metalworking, woodworking, maintenance and DIY tasks. They are not intended for buyers who need larger diameters or specialised bits for masonry, glass or ceramic tiles.

M35 Cobalt With 135-Degree Split Point

The M35 alloy contains 5 percent cobalt, giving higher wear and heat resistance than standard M2 high-speed steel. The 135-degree split point reduces thrust pressure, improves self-centring and helps maintain accuracy in hard materials.

Highlights

  • 13-piece set covers 1/16" to 1/4" in 1/64" steps
  • M35 cobalt steel gives 3-5× longer life than standard HSS
  • 135° split point self-centres and cuts harder metals with less force
  • Twist flutes clear chips faster for cleaner holes
  • Includes index storage case for organised workshop access

Specifications

BrandOlympia Tools
TypeBand Saw Blades
MaterialPlastic
Selling UnitSet
Color/FinishChrome
FeaturesWidely Use
Item Count2 pack
Part NumberYTA0008

Questions about this item

How do I install the 1/16" M35 cobalt bit in a 3/8" drill chuck without it slipping?

Insert the 1/16" shank fully into the 3/8" chuck jaws, tighten all three jaws evenly with the chuck key, then test for run-out before applying pressure.

When will the 135° split point on these M35 bits need replacement?

Replace individual bits when the 135° split point no longer self-centres or when drilling pressure increases noticeably on stainless steel or cast iron.

What is the first limit reached when drilling 1/4" holes in stainless steel continuously?

Heat buildup at the 135° tip becomes the limiting factor; pause to let the M35 cobalt bit cool and clear chips to maintain 3-5x life over M2 HSS.

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