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Cle-Line cobalt left-hand drill bit, 19/64 inch, straw finish

Cle-Line

Cle-Line C30519 19/64 in 135 Degree Cobalt Left-Hand Mechanics Length Drill

SKU CH-1XR6-NDG1V

19/64 inch cobalt left-hand drill bit with 135-degree point for reverse extraction tasks

  • 19/64 inch fractional sizing for precise hole diameters
  • 135-degree split point reduces walking on hard materials
  • Cobalt steel construction resists heat during extended drilling
  • Left-hand rotation extracts broken fasteners effectively
  • Mechanics length design fits tight automotive workspaces

Precision Cobalt Drill Bit

The Cle-Line C30519 is a 19/64 inch cobalt drill bit built for mechanics-length applications. Its 135-degree split point reduces walking and starts holes cleanly in tough materials. The left-hand flute design suits reverse-drilling tasks such as fastener extraction. A straw finish adds surface lubricity during high-speed machining.

Upgrade From Standard Bits

This bit replaces general-purpose high-speed steel drills when hardness and heat resistance matter. The cobalt alloy holds its edge longer in stainless steel, titanium and other abrasive alloys. The jump is worth it when standard bits dull quickly or work-harden the workpiece. Left-hand rotation also solves extraction jobs that right-hand bits cannot handle.

Suits Extraction And Hard-Metal Drilling

Mechanics and machinists who need reverse rotation for broken studs or bolts will benefit from the left-hand geometry. Shops drilling tough alloys gain longer tool life from the cobalt substrate. Buyers who only drill soft wood, plastic or mild steel in forward rotation do not need the added cost or specialised flute direction.

How it compares

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

Price $4.99
Cheaper than about 95% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameCLE-LINE

Questions about this item

Will the 19/64 inch shank fit my 1/2 inch drill chuck?

Yes, the 19/64 inch diameter equals .2969 inch, which is well within the capacity of a standard 1/2 inch drill chuck.

How do I install this left-hand drill bit so it cuts correctly?

Insert the bit into the chuck, tighten securely, and set your drill to reverse rotation; the 135 degree split point helps it start on contact without walking.

When should I replace this cobalt mechanics length drill bit?

Replace it when the 135 degree cutting edges no longer produce clean chips in metal or the straw finish shows heavy discolouration from overheating.

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