Eagle Cutting Tool C300-021-D Cobalt Jobber Drill 21/64

Product Description

The EAGLE CUTTING TOOL C300-021-D is a 21/64-inch cobalt jobber-length drill bit manufactured in the USA. Cobalt construction delivers the heat resistance and hardness needed to cut through tough materials including stainless steel, cast iron, and hardened alloys. The jobber-length flute profile provides a balance of reach and rigidity suited to a wide range of general production and maintenance drilling applications. This bit is appropriate for use by machinists, pipefitters, electricians, HVAC technicians, and other trade professionals who require a reliable, high-performance drill for metal drilling tasks.

The C300-021-D is suited for drilling ferrous and non-ferrous metals, plastics, and composite materials in both shop and field environments. Its 21/64-inch diameter makes it a common choice for clearance holes, pilot holes, and through-hole drilling in structural components, enclosures, and mechanical assemblies. Residential and commercial trade applications both apply wherever a durable, metal-cutting jobber drill is required.

Key Features

• 21/64-inch diameter cobalt construction for extended tool life in hard and abrasive materials
• Jobber-length flute design balances cutting reach with bit rigidity
• Manufactured in the USA
• Suitable for stainless steel, cast iron, hardened alloys, and general metalworking
• Minimum order quantity of 1 unit — available for single-piece purchase

Compatibility

Designed as an OEM-style replacement or direct-fit option for standard 21/64-inch jobber drill applications compatible with 3-jaw drill chucks and keyed or keyless chuck systems accepting that shank diameter.

Installation Notes

This bit is installed by machinists, maintenance technicians, and trade professionals using standard drill presses, hand drills, or magnetic base drills with a compatible chuck. Ensure the workpiece is securely clamped before drilling and use appropriate cutting fluid when drilling hard metals to reduce heat buildup and extend bit life. Always wear appropriate eye protection and follow applicable shop safety protocols when operating drilling equipment.

Technical Specifications

• Diameter: 21/64 inches
• Drill Type: Jobber Length
• Material: Cobalt
• Country of Origin: USA
• Weight: 1.2 pounds

Standard Information

• Brand: EAGLE CUTTING TOOL
• Manufacturer Part Number: C300-021-D