Chicago-Latrobe
Chicago-Latrobe 47925 25-Piece 135° Cobalt Jobber Drill Set
A 25-piece cobalt jobber drill set with 135-degree points for heavy-duty metal drilling
- TypeDrill Bits
- MaterialHAWA
- 25 drill bits cover a wide range of hole sizes
- 135-degree split point starts holes cleanly without wandering
- Cobalt steel resists heat and wear in hard materials
- Straw bronze finish reduces friction and improves chip flow
- Jobber length suits general-purpose drilling in metal and wood
25-Piece Cobalt Drill Set
The Chicago-Latrobe 47925 set contains twenty-five jobber-length drill bits made from HAWA cobalt material. A 135-degree point angle reduces wandering and allows faster starts in metal. The straw-bronze finish identifies the heavy-duty cobalt construction. This set suits professional mechanics and serious DIY users who drill stainless steel and other hard alloys regularly.
Heat resistance and cutting efficiency
Cobalt alloy retains hardness at higher temperatures than standard high-speed steel, so the bits stay sharp longer during extended drilling sessions. The 135-degree split point lowers thrust requirements, which reduces heat build-up and operator fatigue. Consistent chip evacuation keeps the flutes clear, maintaining steady cutting action without excessive pressure or noise from the drill motor.
Workshop integration and storage
The twenty-five bits cover a broad range of diameters for maintenance, fabrication and automotive repair tasks. Jobber length provides standard reach for bench drills, hand drills and magnetic-base drills without needing specialised collets or adapters. The indexed case keeps each bit organised and protected, freeing drawer space and preventing lost or damaged cutting edges between jobs.
Highlights
- 25 drill bits cover a wide range of hole sizes
- 135-degree split point starts holes cleanly without wandering
- Cobalt steel resists heat and wear in hard materials
- Straw bronze finish reduces friction and improves chip flow
- Jobber length suits general-purpose drilling in metal and wood
Specifications
| Brand | CHICAGO-LATROBE |
|---|---|
| Type | Drill Bits |
| Material | HAWA |
Questions about this item
How do I install the 25-piece cobalt jobber drill set in my drill chuck and what step is often missed?
Open the chuck fully, insert each bit shank completely, then tighten securely; the step often missed is verifying the bit runs true before drilling.
What maintenance will the 135-degree cobalt bits need over time?
Clean flutes after each use, apply light oil to prevent rust, and resharpen the 135-degree points when cutting slows.
What limit appears first when drilling continuously with these cobalt jobber bits?
Heat buildup at the 135-degree point reduces hardness fastest during sustained drilling.
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