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Cle-Line C18045 R .3390 135° split-point drill bit, black oxide finish

Cle-Line

Cle-Line C18045 R .3390 135° split-point drill bit

SKU CH-W89E-55BW2

135° split-point high-speed steel jobber drill bit in size R with .3390 decimal equivalent and black oxide finish

  • Product typeDrill Bits
  • Main materialHAWA
  • 135° split point starts on contact without wandering
  • High-speed steel construction resists heat during heavy drilling
  • Black oxide finish reduces friction and extends bit life
  • Decimal size .3390 matches precise letter R specifications

Cle-Line C18045 R 135° split-point drill bit

The Cle-Line C18045 R is a jobber-length drill bit made from high-speed steel with a black-oxide finish. Its 135-degree split point reduces walking and starts holes cleanly in metal. The bit suits machinists, maintenance technicians and hobbyists who need accurate drilling in steel and alloy.

Fits standard drill chucks

The straight shank seats in any drill press or handheld chuck without adapters. The split-point geometry cuts on contact so a separate centre drill is not required. The .3390 decimal diameter covers letter-size R clearance holes for tapping or fastener work.

How it compares

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

Price $3.99
Cheaper than about 96% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameCLE-LINE
Product typeDrill Bits
Size & build
Main materialHAWA

Questions about this item

At what point angle does the split-point geometry start to wander in harder steel?

The 135-degree split point is designed to self-centre and reduce walking, so it holds its line in tougher alloys without a centre punch.

How much heat builds up in the flutes during a long run of holes?

High-speed steel with black-oxide finish dissipates heat steadily, letting the bit stay sharp through extended drilling sessions.

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