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Black oxide extra-long drill bits in indexed case

Chicago-Latrobe

Chicago-Latrobe 69869 25PC Heavy-Duty Extra Long Drill Set 120X

SKU CH-TMQ4-N7SVF

25-piece heavy-duty extra-long drill set in high-speed steel with black oxide finish, 118-degree K-notched points, fractional sizes 1/8 to 1/2 by 1/64 in

  • TypeDrill Bits
  • Extra reach for deep holes with 120X extra-length design
  • 25-piece fractional range covers 1/8 to 1/2 by 1/64 in.
  • High-speed steel construction resists wear in heavy-duty use
  • Black oxide finish reduces friction and aids chip ejection
  • 118-degree K-notched point centres quickly without walking

Chicago-Latrobe 25-Piece Extra Long Drill Set

This Chicago-Latrobe 69869 set contains 25 heavy-duty extra long drill bits made from high speed steel with a black oxide finish. The fractional sizes range from 1/8 to 1/2 inch in 1/64 inch increments. It is intended for users who need extended reach when drilling deep holes in metal or wood.

K-Notched 118-degree point for general drilling

The bits feature a K-Notched point ground to 118 degrees, which is a standard geometry for general-purpose drilling in mild steel, aluminium and wood. The extra length allows access to deep cavities but increases deflection risk, so feed pressure must be controlled and chip clearing performed frequently. Hardened steels or stainless alloys may exceed the practical cutting ability of this high speed steel design.

Check chuck capacity and workpiece clearance

Before ordering, verify that your drill chuck can accommodate the largest 1/2 inch shank in the set. Ensure the workpiece and fixture allow enough axial space for the full extra long flute length without the chuck contacting the surface. Confirm that your machine provides sufficient torque at low speed for the larger diameters, and that coolant or lubricant can reach the cutting zone in deep holes.

Highlights

  • Extra reach for deep holes with 120X extra-length design
  • 25-piece fractional range covers 1/8 to 1/2 by 1/64 in.
  • High-speed steel construction resists wear in heavy-duty use
  • Black oxide finish reduces friction and aids chip ejection
  • 118-degree K-notched point centres quickly without walking

Specifications

BrandCHICAGO-LATROBE
TypeDrill Bits

Questions about this item

How do I decide between the 120X set and other Chicago-Latrobe drill sets?

The 120X list number identifies this 25-piece heavy-duty extra-length set covering fractional sizes from 1/8 to 1/2 inch in 1/64-inch increments.

What does the 118-degree point angle mean when I am drilling?

The 118-degree point with K-Notched geometry centres quickly in steel and reduces wandering on flat surfaces.

How does the straight shank limit what I can use these bits with?

The straight shanks fit standard three-jaw chucks up to 1/2-inch capacity and are not compatible with SDS or hex quick-change systems.

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