Drill Bit GLBCOX61/8 1/8″ x 6″ Cobalt Extension – Drill America

Description

Product Overview

The Drill America GLBCOX61/8 1/8″ x 6″ cobalt aircraft extension drill bit is a premium long‑length tool designed for precision drilling in high‑tensile materials. Constructed from cobalt‑steel alloy, the bit offers exceptional hardness and heat resistance, allowing it to maintain a sharp cutting edge even under the intense friction of stainless steel, inconel, and titanium. The 135° split‑point tip is engineered to start on contact, preventing the bit from walking and ensuring accurate hole placement. A gold‑oxide surface treatment provides a thin protective layer that resists corrosion while delivering performance comparable to uncoated cobalt tools. With a 6‑inch overall length and a round shank, this bit integrates seamlessly with a wide variety of chuck and collet systems, delivering the reach needed for deep‑hole applications without sacrificing rigidity.

Usage

This extension bit excels in environments where standard drill bits fall short. Aerospace technicians rely on its ability to penetrate aircraft-grade alloys, while automotive mechanics appreciate its durability when working on engine components and transmission housings. Industrial maintenance crews use the bit for drilling through heavy‑duty pipe, valve bodies, and structural steel where extended reach is essential. The bit’s design accommodates both handheld power drills and larger bench‑mounted drill presses, making it versatile for on‑site repairs and shop‑floor production. Its split‑point geometry reduces the need for pilot holes, saving time and improving workflow efficiency across a range of professional applications.

Why Choose Us

Choosing the Drill America GLBCOX61/8 means selecting a tool backed by a legacy of quality and reliability. Each bit undergoes rigorous testing to meet exacting industry standards, ensuring consistent performance batch after batch. The cobalt‑steel composition delivers superior wear resistance, extending the service life of the bit and reducing the total cost of ownership. Our gold‑oxide coating not only protects against rust but also minimizes heat buildup during prolonged drilling sessions. Additionally, Drill America provides responsive customer support and a comprehensive warranty, giving professionals confidence that their investment is protected.

Key Features

• High‑strength cobalt alloy cuts through stainless steel, inconel and titanium with ease
• 135° split‑point tip eliminates walking for precise hole placement
• Gold‑oxide coating resists corrosion and reduces heat buildup
• 6‑inch length provides extra reach for deep‑hole drilling tasks
• Round shank fits most chucks and collets, backed by dedicated after‑sales support

FAQ

What materials can this bit drill effectively?

The bit is optimized for high‑tensile alloys such as stainless steel, inconel, and titanium, but it also performs well on carbon steel and other common metals.

Do I need a pilot hole when using this extension bit?

The 135° split‑point design allows the bit to start cutting immediately, often eliminating the need for a pilot hole, especially in softer metals.

Is the gold‑oxide coating durable?

Yes, the thin gold‑oxide layer provides corrosion resistance and helps dissipate heat, extending the bit’s usable life under demanding conditions.

Can this bit be used with both handheld drills and drill presses?

Absolutely. The round shank is compatible with standard chucks and collets, making it suitable for a wide range of power tools.

What warranty does Drill America offer?

Drill America provides a limited warranty that covers manufacturing defects, ensuring you receive a reliable product backed by professional support.