Cle-Line
Cle-Line C18458 135 Degree Heavy-Duty Parabolic Jobber Length Drill Bit
A 1/2 inch jobber length drill bit with a 135 degree split point for heavy-duty drilling
- TypeDrill Bits
- 135-degree split point starts on contact for accurate holes
- parabolic flute clears chips faster in deep drilling
- high-speed steel construction resists wear in tough materials
- jobber length fits standard chucks for versatile use
- black and gold finish reduces friction and corrosion
Cle-Line C18458 Drill Bit
The Cle-Line C18458 is a 1/2 inch jobber length drill bit built from high speed steel with a black and gold finish. It features a 135 degree split point that helps start holes cleanly without a centre punch. The fractional inch size has a decimal equivalent of .5000 and zero coolant holes. This accessory suits general workshop and automotive drilling tasks.
Who should use this bit
Machinists and technicians drilling steel or alloy where a self-centring point reduces walking will benefit from the split point geometry. Builders who need coolant-through capability or a different point angle should look at other designs because this bit has no coolant holes and a fixed 135 degree angle. The jobber length serves standard depth requirements rather than deep-hole applications.
Deciding specification
The 135 degree split point angle is the single specification that determines suitability; it controls how the bit engages the workpiece and whether a centre punch is required. If your process demands a different point angle or coolant delivery, this bit will not match that need.
Highlights
- 135-degree split point starts on contact for accurate holes
- parabolic flute clears chips faster in deep drilling
- high-speed steel construction resists wear in tough materials
- jobber length fits standard chucks for versatile use
- black and gold finish reduces friction and corrosion
Specifications
| Brand | CLE-LINE |
|---|---|
| Type | Drill Bits |
Questions about this item
Does the 135-degree split point on the C18458 reduce heat build-up during extended drilling?
The 135-degree split point is designed for faster penetration and self-centering, which helps minimise friction and heat generation when drilling through tough materials.
What chuck size is required to hold the 1/2-inch shank of this jobber bit?
A drill chuck with a minimum 1/2-inch capacity is needed to secure the 0.5000-inch shank of this high-speed steel bit.
Can this black-and-gold high-speed steel bit be used in older corded drills without variable speed?
Yes, the jobber-length bit fits standard keyed or keyless chucks on older drills, though manual speed control is recommended for optimal cutting performance.
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