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Metal case holding 29 cobalt drill bits with straw bronze finish

Chicago-Latrobe

Chicago-Latrobe 47796 29PC 135 Degree Cobalt Drill Bit Set

SKU CH-SA6Q-75PCK

29-piece cobalt steel drill bit set with 135-degree split points for heavy-duty jobber length drilling

  • Product typeDrill Bits
  • Main materialCobalt Steel
  • 29-piece set covers a wide range of drilling tasks
  • 135-degree split point starts accurately without wandering
  • Cobalt steel construction resists heat and wear in tough materials
  • Straw bronze finish reduces friction and improves chip evacuation
  • Jobber length design suits standard drill chucks and general-purpose work

29-Piece Cobalt Jobber Drill Set

This Chicago-Latrobe 47796 set contains 29 cobalt steel jobber length drill bits with a 135-degree point angle and a straw-bronze finish. The cobalt material provides high heat resistance and wear resistance for drilling hard metals such as stainless steel and cast iron. The set is supplied new and covers a range of diameters for general workshop use.

Suited for metalworkers drilling hard alloys

Mechanics and fabricators who regularly drill stainless steel, titanium or high-strength alloys will benefit from the cobalt construction and 135-degree split point. Buyers who only drill wood, plastic or soft aluminium will not need the extra heat resistance and can use standard high-speed steel bits instead.

135-degree split point for hard-metal drilling

The 135-degree point angle reduces walking and lowers the thrust required to start a hole in tough materials. This geometry is the key specification that determines whether the set matches the hardness of the workpiece you are machining.

How it compares

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

Price $186.99
Pricier than about 90% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameCHICAGO-LATROBE
Product typeDrill Bits
Size & build
Main materialCobalt Steel

Questions about this item

What chuck size will hold the 29 cobalt bits in the 47796 set?

All 29 bits have jobber-length shanks that fit standard 13 mm drill chucks; no special adapter is required.

How do I keep the 135-degree split points from walking on hard metal?

Start each hole with light pressure at low speed until the split point seats, then increase feed; skipping this step causes the bit to skate.

When should I replace a dull bit from the 47796 set?

Replace a bit when the straw-bronze finish wears off the cutting lips or the 135-degree point no longer self-centres in steel.

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