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Silver 12 inch high speed steel extension drill bit with split point tip

Cleveland Golf

Cleveland Golf C13186 Extension Drill 7/32x12 In HSS Pneumatic Accessory

SKU CH-G1TQ-2TTW3 MPN C13186

A 12-inch aircraft extension drill bit made from high speed steel with a 135-degree split point for precision drilling

  • Product typeDrill Accessories
  • Main materialHigh speed steel
  • 12-inch reach for deep-hole access
  • 7/32-inch diameter suits precision tasks
  • 135-degree split point starts cleanly
  • High-speed steel resists heat wear
  • Bright finish reduces chip adhesion

Extension Drill 7/32 Inch HSS

The Cleveland C13186 is an aircraft-type extension drill manufactured from high speed steel. Its bright uncoated finish and 135-degree split point design promote accurate starts and efficient chip removal. The 12-inch overall length provides extended reach for deep or obstructed holes.

Suited for deep-hole drilling in metal

This accessory suits machinists and maintenance crews drilling fractional 7/32-inch holes to a maximum depth of 7/8 inch in high-performance materials. The 4xD length-to-diameter ratio limits use to shallow holes relative to the bit diameter, so buyers needing deeper bores should look at something else.

12-inch overall reach

The defining specification is the 12-inch extension length combined with a 7/32-inch cutting diameter. This fixed geometry determines whether the tool can access the specific workpiece features in your application.

How it compares

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

Price $12.99
Cheaper than about 82% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameCleveland
Model nameC13186
Product typeDrill Accessories
Size & build
Main materialHigh speed steel

Questions about this item

Will the 135-degree split point on the C13186 drill bit need re-sharpening after repeated use in metal?

The 135-degree split point on this high-speed steel bit can be re-sharpened when it dulls; no coating is present to complicate the process.

What limits continuous drilling depth with the 7/32-inch C13186 extension drill?

The maximum drilling depth is 7/8 inch per pass, and the 12-inch overall length restricts reach in deep holes.

How much heat builds up in the C13186 HSS bit during all-day pneumatic drilling?

High-speed steel conducts heat away from the 135-degree point, but the bright uncoated finish offers no thermal barrier during sustained use.

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