#18 X 12" Aircraft Extension Drill Bit | Cobalt | GLBCOX1218
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#18 X 12" Aircraft Extension Drill Bit | Cobalt | GLBCOX1218

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#18 X 12" Aircraft Extension Drill Bit | Cobalt | GLBCOX1218

Drill AmericaSKU: GLBCOX1218
Price:
$9.42 $17.32per 1( $9.42 each)
Pieces 1
Measurement type Inch
Diameter #18
Length 12
Material Cobalt
Finish Gold
Flute length 2-1/8
Point type Split Point
Shank Round
Size #18
Weight 1.0 lb

WARNING: This product can expose you to chemicals including lead and lead compounds, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to https://www.P65Warnings.ca.gov.

Description

Specs
  • Diameter: #18
  • Overall length: 12" (304.8 mm)
  • Material: Cobalt alloy steel (high-hardness, heat-resistant HSS variant)
  • Type: Aircraft extension twist drill bit
  • Quantity: 1 piece
Features
  • Long-reach 12" extension enables access to deep or recessed holes in tight spaces common in aircraft maintenance, automotive work, and industrial fabrication
  • Cobalt alloy construction provides greater hardness and heat resistance than standard HSS, improving wear life when drilling through tougher metals (e.g., stainless steel, alloy steels)
  • Designed for repeated high-temperature drilling, reducing edge dulling during prolonged use
  • Specifically suited for metalworking tasks that require precise hole placement in constrained layouts
  • Not intended for wood, masonry, or composites
Physical
  • Length: 12" extension
  • Diameter: #18
  • Material: Cobalt alloy steel
  • Shape: Twist drill with extension reach

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800-222-0324

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