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Cle-Line mechanics length drill bit, 1/2 inch, 135 degree point, black and gold finish

Cle-Line

Cle-Line C23859 Mechanics Length Drill Bit 1/2 in 135 Degrees

SKU CH-ZRDD-DMRA4

Mechanics length drill bit with 135-degree point for general-purpose drilling in 1/2 inch size

  • 1/2 in fractional size fits common chucks
  • 135 degree point angle starts holes cleanly
  • High speed steel construction resists wear
  • Black and gold finish reduces friction
  • Mechanics length suits general shop work

Mechanics Length Drill Bit

The Cle-Line C23859 is a fractional-inch drill bit designed for general machining tasks in automotive and maintenance environments. It suits technicians who need a reliable high-speed steel cutter for creating standard holes in metal or plastic.

135 Degree Point Geometry

The 135-degree split point reduces walking on hard surfaces and lowers the thrust required during normal drilling operations. High-speed steel construction manages heat buildup effectively during sustained use in handheld or press applications.

Black and Gold Surface Treatment

The black and gold finish provides corrosion resistance and helps identify the tool quickly in a busy kit. No additional accessories or software are bundled with this single cutting tool.

How it compares

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

Price $8.99
Cheaper than about 90% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameCLE-LINE

Questions about this item

How do I fit the 1/2 in shank into a drill chuck without damaging it?

Open the chuck fully, insert the bit until the shank seats firmly, then tighten evenly by hand or key; the step most people skip is checking that the flutes clear the jaws before drilling.

When will the black-and-gold finish wear enough to need replacement?

The coating is a surface treatment on high-speed steel; once the gold layer disappears and the cutting edges dull, the bit should be replaced because it cannot be economically resharpened.

At what point does heat become the limiting factor during continuous drilling?

The 135-degree split point reduces thrust, but sustained high-speed work in hard metal will overheat the HSS body first, causing loss of hardness before the shank or finish fails.

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