Drill America
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Drill America - GLBCOX123/16 3/16 x 12 Cobalt Aircraft Extension Drill Bit, GLBCO Series
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Drill America - GLBCOX123/16 3/16 x 12 Cobalt Aircraft Extension Drill Bit, GLBCO Series
Drill America Cobalt Aircraft Extension Drills are effective in drilling tough, high tensile strength materials like stainless steel, inconel, and titanium.
Drill America - GLBCOX123/16 3/16" x 12" Cobalt Aircraft Extension Drill Bit, GLBCO Series
Item #: 19391664

Drill America - GLBCOX123/16 3/16" x 12" Cobalt Aircraft Extension Drill Bit, GLBCO Series

86% of respondents would recommend this to a friend

Item #: 19391664

USD 15

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Order now and get it around Sunday, September 27
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Drill America Cobalt Aircraft Extension Drills are effective in drilling tough, high tensile strength materials like stainless steel, inconel, and titanium.
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What Stands Out

Cobalt Steel Material
Made from durable cobalt steel, this drill bit offers superior strength and heat resistance, making it ideal for drilling through tough materials with longevity in mind.
Extended Length
At 6 inches long, this extension drill bit allows for deep drilling applications in confined spaces, ensuring you can reach hard-to-access areas with ease.
Precision Design
Designed for precision and accuracy, the GLBCO Series minimizes wandering and reduces friction, providing clean holes and reducing overall drilling time compared to standard bits.

Product Details

Find the best deals on Drill America 716 x 6 Cobalt Aircraft Extension Drill Bit at Ubuy British Virgin Islands. Get superior performance for cutting harder metals like stainless steel. Shop now!

Who Should Buy?

Suitable For
  • Aerospace Professionals

    Ideal for those needing precision drilling through tough materials like aluminum, titanium, and composites in aircraft manufacturing.

  • Industrial Maintenance

    Perfect for maintenance technicians who require durable bits for extended service in heavy-use machinery and equipment.

  • Metal Fabricators

    Beneficial for metalworking specialists who need accurate drilling in various metal types, ensuring clean and efficient holes.

Not Suitable For
  • Casual DIYers

    Not suitable for occasional DIY projects, as its specialized features may overwhelm general home improvement tasks.

Product Description

Drill America - GLBCOX123/16 3/16" x 12" Cobalt Aircraft Extension Drill Bit, GLBCO Series

Have any Query? Chat with us

Customer Questions & Answers

  • Question: What is the main use of the Drill America 1/2" x 12" Cobalt Aircraft Extension Drill Bit?

    Answer: The Drill America 1/2" x 12" Cobalt Aircraft Extension Drill Bit is primarily designed for drilling through tough materials such as stainless steel, cast iron, and other high-strength alloys. Made from durable cobalt steel, this bit can withstand high temperatures and wear, making it suitable for industrial applications where precision is crucial. Ideal for aviation, automotive, and heavy manufacturing tasks, this drill bit provides reliable performance when tackling tough jobs.
  • Question: How does the cobalt material benefit the performance of this drill bit?

    Answer: Cobalt steel enhances the drill bit’s hardness and heat resistance, which leads to increased longevity compared to standard steel bits. This quality makes it especially effective for drilling tougher materials that would quickly dull regular bits. For professionals needing to drill through demanding metals for applications like aerospace or automotive repair, this cobalt drill bit stands out due to its ability to maintain sharpness during extended use and offers reduced friction.
  • Question: What sizes are available for the Drill America GLBCO Series bits?

    Answer: The Drill America GLBCO Series offers a variety of sizes to accommodate different drilling needs beyond the 1/2" x 12" option. Customers can find drill bits ranging in diameter and length, ensuring versatility for various applications. Whether you need precision drilling in tight spaces or larger holes for structure, selecting the right size is crucial for achieving the best results.
  • Question: Can I use this drill bit with standard drill machines?

    Answer: Yes, the Drill America 1/2" x 12" Cobalt Aircraft Extension Drill Bit is designed to be compatible with most standard drill machines. It features a 1/2" shank that fits into common drill chucks, allowing for ease of use in various power tools. Professionals and DIY enthusiasts alike can confidently use this bit in their drills, ensuring reliable and efficient performance across different projects.
  • Question: Is this drill bit suitable for use in metalworking and fabrication?

    Answer: Absolutely! The Drill America Cobalt Aircraft Extension Drill Bit is specifically engineered for metalworking and fabrication tasks, excelling in cutting through hard metals with precision. Whether you're engaged in metal fabrication projects, automotive repairs, or machining processes, this bit’s durability and performance capabilities make it an essential tool for achieving accurate results in metalworking.
  • Question: What are extension drill bits, and why would I use one?

    Answer: Extension drill bits, like the 1/2" x 12" Cobalt Aircraft bit, provide additional length to reach deep or hard-to-access areas where standard bits may not suffice. This feature is particularly useful in applications like drilling deep holes in thick materials or areas with limited maneuverability. Using an extension bit can enhance precision and efficiency, facilitating work in confined spaces without compromising quality.
  • Question: How do I properly maintain my cobalt drill bits?

    Answer: To maintain your cobalt drill bits, clean them after use to remove debris and metal shavings. Store them in a protective case to prevent dulling and damage. For longevity, avoid applying excessive force during drilling, as this can lead to premature wear. Regularly check for signs of wear and replace them if you notice decreased performance. Proper maintenance ensures that your bits remain effective for precision drilling tasks.
  • Question: What types of projects benefit from using the Drill America Cobalt Aircraft drill bits?

    Answer: Projects that require precision drilling in hard metals, such as aerospace fabrication, automotive repair, or heavy machinery maintenance, significantly benefit from using the Drill America Cobalt Aircraft drill bits. Their ability to maintain sharpness and penetrate tough materials makes them ideal for professionals in manufacturing, construction, and mechanical fields who demand high-performance tools for accurate results.
  • Question: Do I need to use a specific drill speed when using this cobalt drill bit?

    Answer: Yes, using the appropriate drill speed is crucial for optimal performance of the cobalt drill bit. Generally, for metal applications, a slower speed is advisable to prevent overheating, which can dull the bit. Maintain a moderate speed while applying steady pressure for best results. Adjust the speed based on the material being drilled to enhance efficiency and prolong the life of the bit.
  • Question: Where can I buy Drill America 1/2" x 12" Cobalt Aircraft Extension Drill Bit in British Virgin Islands?

    Answer: You can purchase the Drill America 1/2" x 12" Cobalt Aircraft Extension Drill Bit from Ubuy, a reliable online platform offering a wide range of tools and equipment. Ubuy partners with various sellers to ensure you have access to quality products. Their platform provides detailed descriptions and options for this drill bit, making it easy for customers in British Virgin Islands to find what they need efficiently.

Drill America Long Length Drill Bits Editorial Review

Drill America #1 x 12" Cobalt Aircraft Extension Drill Bit, GLBCO Series, #1 (Pack of 1) is designed for cutting through hard materials like stainless steel and plastics with ease. Users have reported that its sharpness and reliability have helped them complete challenging drilling tasks without bending, making it a favorite for specialized projects. Its gold finish not only adds to its sturdiness but also aids in the overall drilling efficiency. With a robust construction, it effectively drills through various surfaces and proves to withstand heavy use, thus gaining praise for its performance and longevity in demanding conditions.

Customer Reviews & Ratings

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Pros

  • Sharp enough for various materials
  • Sturdy and reliable for heavy-duty use
  • Gold finish enhances durability
  • Perfect for specialized drilling tasks

Cons

  • A bit may break under excessive abuse

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“Great products and very good service: very easy and very fast international delivery.”

9 September 2026 · via Trustpilot
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8 September 2026 · via Trustpilot
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  • Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
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USD 15

Order now and get it around Sunday, September 27

QTY:

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Features & Benefits

  • Effective in drilling tough, high tensile strength materials
  • 135° split point tip prevents drill from walking
  • Round shanks allow use with a wide variety of tool holding systems
  • Gold oxide surface treatment for identifying cobalt steel tools
  • Available in 6 in. and 12 in. overall lengths for extra reach
  • Manufactured to National Aerospace Standard 907

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