Eagle Cutting Tool C304-155-D Cobalt Jobber Drill Size 55

Product Description

The EAGLE CUTTING TOOL C304-155-D is a size 55 cobalt jobber-length drill bit manufactured in the USA. Cobalt construction gives this bit greater heat resistance and edge retention compared to standard high-speed steel, making it well-suited for drilling harder materials where tool life and hole quality are priorities. At 0.12 pounds, it is a compact, single-piece cutting tool designed for use in standard drill chucks and drill presses. Machinists, pipefitters, electricians, and general trade professionals reach for cobalt jobber drills when working with stainless steel, cast iron, hardened alloys, or other tough substrates.

This drill bit is appropriate for both shop and field applications where a standard jobber-length bit is required. The size 55 designation corresponds to the wire gauge drill size series, filling a specific diameter requirement in precision drilling work. It is suited for use in manual hand drills, drill presses, and CNC setups where wire gauge sizes are specified. Typical applications include pilot hole drilling, clearance hole drilling, and through-hole work in metal fabrication and mechanical assembly.

Key Features

• Cobalt construction for increased heat resistance and extended tool life in hard materials
• Wire gauge size 55 for precise diameter drilling requirements
• Jobber-length geometry balances reach and rigidity for general-purpose drilling
• Made in the USA

Compatibility

Designed as a standard wire gauge jobber-length drill bit compatible with conventional drill chucks and drill presses that accept round-shank bits of the corresponding diameter.

Installation Notes

Secure the bit firmly in the chuck before operation and verify there is no runout before drilling. Use appropriate cutting fluid or lubricant when drilling hard metals to reduce heat buildup and extend bit life. Operators should wear appropriate eye protection per applicable shop safety standards. Disconnect power to the drill press or deenergize the tool before changing bits.

Technical Specifications

• Drill Size: 55 (wire gauge)
• Material: Cobalt
• Length Type: Jobber
• Country of Origin: USA
• Weight: 0.12 pounds

Standard Information

• Brand: EAGLE CUTTING TOOL
• Manufacturer Part Number: C304-155-D