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Free Shipping*

U.S. Based Support

Fast & Free Estimates

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No Middle Man

Free Shipping*

U.S. Based Support

Fast & Free Estimates

90-Day Easy Returns

No Middle Man

Free Shipping*

U.S. Based Support

Fast & Free Estimates

90-Day Easy Returns

No Middle Man

Free Shipping*

U.S. Based Support

Fast & Free Estimates

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No Middle Man

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U.S. Based Support

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U.S. Based Support

Fast & Free Estimates
1/4" x 12" HSS Aircraft Extension Black Oxide Drill Bit Bits & Drivers Cable Bullet

1/4" x 12" HSS Aircraft Extension Black Oxide Drill Bit

SKU DWDA/CX121/4-ASM

Use this 12-inch, 1/4” drill bit to drill pass-through holes through your non-tensioning posts.

$ 13.10 - $ 13.10
$ 13.10
$ 13.10 - $ 13.10
$ 13.10
Availability:
in stock—ships in 3–5 days

Pay in full or choose a flexible payment plan with Shop Pay.* Learn More >

Compatible Collections
  • Cable Tensioning System for Wood Posts
  • Black Cable Tensioning System for Wood Posts
  • Cable Tensioning System for Sleeved Posts
Shipping & Delivery

Shipping Costs: We offer UPS®, USPS®, and LTL shipping, with free UPS® Ground on orders over $1,999. Available shipping methods depend on order size, volume, and destination. Learn more

Delivery Times: Estimated delivery times are based on your location and the chosen shipping method. 

  • Orders shipped by UPS® Ground may take 1–5 business days to deliver within the 48 contiguous United States. Shipments to Alaska, Hawaii, and Puerto Rico will take 4–5 business days to arrive at their destination.
  • UPS Next Day Air and 2nd Day Air orders placed before noon on Friday will be delivered by UPS the following Monday or Tuesday respectively.

International Shipping: We ship to Alaska, Hawaii, Puerto Rico, the U.S. Virgin Islands, and Canada (excluding Quebec). Learn more

Free Shipping: We offer free UPS® Ground shipping on orders over $1,999 within the 48 contiguous U.S. states. Learn more

Exchanges & Returns
90-Day Returns

Enjoy hassle-free returns within 90 days!
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No-Penalty Exchanges

Swap items with no restocking fee!
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Warning
  • This product can expose you to chemicals including Cobalt or Nickel chemicals, which are known to the state of California to cause cancer. For more information, go to www.P65Warnings.ca.gov
  • Drilling, sawing, sanding, or machining wood products can expose you to wood dust, a substance known to the state of California to cause cancer. Avoid inhaling wood dust or use a dust mask or other safeguards for personal protection. For more information, go to www.P65Warnings.ca.gov/wood

Product Details

Use this 12-inch, 1/4” drill bit to drill pass-through holes through your non-tensioning posts.

Aircraft Extension Drill Specifications

  • Included in applicable installation kits (1 per kit)

DIY Skill Level Recommended:

Beginner: Little to no DIY experience needed—utilizes simple techniques

Application:

Recommended for interior, inland exterior, and most coastal exterior applications

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