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Metal index case holding 26 cobalt drill bits with straw bronze finish

Chicago-Latrobe

Chicago-Latrobe 69886 26PC 135 Degree Cobalt Drill Bit Set

SKU CH-V1S7-3RRFD

A 26-piece cobalt jobber-length drill bit set with 135-degree split points for hard-metal drilling

  • Product typeDrill Bits
  • 26-piece set covers a wide range of drilling needs
  • 135-degree split point starts on contact and reduces walking
  • Cobalt steel construction resists heat and extends bit life
  • Straw bronze finish adds corrosion resistance and improves chip flow
  • Jobber length design suits general-purpose drilling in metal and wood

Professional Cobalt Drilling Set

The Chicago-Latrobe 69886 provides 26 jobber-length cobalt drill bits with a 135-degree point angle. The straw-bronze finish identifies the heavy-duty cobalt construction. This set equips workshops for demanding metal-drilling tasks where standard high-speed steel wears too quickly.

Upgrade From Standard Steel Bits

Machinists and maintenance teams replace general-purpose HSS sets when drilling stainless steel, titanium or high-temperature alloys. The cobalt substrate and split-point geometry reduce work hardening and walking, making the step up worthwhile for repeated hard-metal work.

Jobber Length And Material Limits

Jobber-length bits suit general machine and portable drilling but lack the reach of taper-length or aircraft-extension drills. Cobalt withstands higher heat than HSS yet remains brittle compared to carbide, so rigid setups and proper coolant are essential to prevent breakage.

How it compares

Measured against everything we stock in Bits, Hole Saws & Accessory Kits, at today’s prices. Recalculated every night.

Price $178.99
Pricier than about 90% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameCHICAGO-LATROBE
Product typeDrill Bits

Questions about this item

What chuck size is required for the 135-degree cobalt bits in the 69886 set?

The jobber-length shanks fit standard three-jaw drill chucks up to the largest bit diameter in the 26-piece assortment.

How should I start each hole to prevent the 135-degree split point from walking on hard metal?

Centre-punch the location, then apply steady pressure at low RPM so the self-centring point engages before full speed.

When do the cobalt bits in this 26-piece set need resharpening or replacement?

Resharpen when the straw-bronze finish wears off the cutting lips or when drilling force increases noticeably on stainless steel.

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