Eagle Cutting Tool C304-114-D Cobalt Jobber Drill 1/4 in

Product Description

The EAGLE CUTTING TOOL C304-114-D is a cobalt jobber-length twist drill designed for demanding metal drilling applications. Manufactured in the USA, this 1/4-inch drill is built from high-speed cobalt steel alloy, which delivers superior heat resistance and edge retention compared to standard high-speed steel bits. Cobalt construction allows continuous cutting in hard or abrasive materials where conventional drills lose their edge quickly. Jobber-length geometry provides a balance of reach and rigidity suited to general-purpose drilling on the bench or in the field. Electricians, plumbers, HVAC technicians, and metal fabricators commonly reach for cobalt jobber drills when working through steel, cast iron, stainless, or hard alloys.

This drill is suited for use in hand-held drills, drill presses, and magnetic base drills across residential, commercial, and light industrial jobsites. The 1/4-inch diameter makes it a frequent choice for conduit knockouts, pipe hanger holes, sheet-metal penetrations, and structural steel pilot holes. USA manufacture ensures consistent dimensional tolerances and point geometry from piece to piece, which matters when drilling to a specific fit or using the bit in a jig or fixture.

Key Features

• Cobalt high-speed steel construction for extended heat and wear resistance
• 1/4-inch diameter jobber-length geometry balances reach with rigidity
• Domestic USA manufacture for consistent dimensional tolerances
• Suitable for steel, stainless steel, cast iron, and other hard metals
• Compatible with standard drill chucks accepting 1/4-inch round shanks

Compatibility

Designed as a general-purpose cobalt jobber drill fitting any standard keyed or keyless chuck that accepts a 1/4-inch shank, including hand-held drills, drill presses, and magnetic base drilling equipment.

Installation Notes

Cobalt drills should be run at lower RPM with steady feed pressure compared to standard HSS bits — excessive speed without adequate feed generates heat that can work-harden the workpiece. Always secure the workpiece before drilling and use cutting fluid or oil when drilling stainless steel or other hard alloys to extend tool life. Inspect the cutting edges before each use and replace the bit if the point shows visible chipping or dulling. Eye protection is required during all drilling operations per standard jobsite safety practices.

Technical Specifications

• Diameter: 0.25 inches (1/4 inch)
• Drill Type: Cobalt Jobber-Length Twist Drill
• Country of Origin: USA
• Weight: 0.42 pounds

Standard Information

• Brand: EAGLE CUTTING TOOL
• Manufacturer Part Number: C304-114-D