Eagle Cutting Tool LHJ100-028-I Left-hand Hss Jobber Drill

Product Description

The EAGLE CUTTING TOOL LHJ100-028-I is a 7/16-inch left-hand high-speed steel (HSS) jobber-length drill bit designed for reverse-rotation drilling applications. Left-hand drill bits spin counterclockwise, making them a practical first step when extracting broken bolts, damaged screws, or seized fasteners — the cutting action often backs the fastener out before an extractor is even needed. The jobber-length geometry balances reach and rigidity, and the HSS construction holds up to the heat and friction typical in metal drilling tasks. Licensed tradespeople and maintenance mechanics keep left-hand sets on hand for broken-fastener recovery in steel, aluminum, and cast iron.

This drill bit fits standard reverse-capable drill chucks and is suited for use in automotive repair, HVAC equipment service, plumbing rough-in, and general maintenance situations where fasteners have sheared flush or snapped below the surface. The 7/16-inch diameter is a common size for medium-to-large bolt extractions. It is equally useful in a drill press or handheld reversible drill driver when set to counterclockwise rotation.

Key Features

• Left-hand (counterclockwise) cutting geometry for broken fastener extraction
• 7/16-inch diameter jobber-length HSS construction
• Compatible with any reversible drill or drill press accepting standard round shanks
• HSS material withstands heat buildup during metal drilling
• Jobber-length design balances drilling depth and bit rigidity

Compatibility

Designed as an OEM-style left-hand jobber drill bit for use in any reversible drill or drill press with a chuck that accepts standard 7/16-inch shank tooling.

Installation Notes

Left-hand drill bits must be used with the drill set to reverse (counterclockwise) rotation. Secure the workpiece firmly before drilling to prevent movement. Use appropriate cutting fluid when drilling hardened steel to extend bit life and reduce heat buildup. This type of tooling is typically used by licensed tradespeople including HVAC technicians, plumbers, and electricians performing equipment repairs.

Technical Specifications

• Drill Diameter: 7/16 inches
• Hand: Left-hand (counterclockwise)
• Material: High-Speed Steel (HSS)
• Length Type: Jobber
• Weight: 1.2 pounds
• Minimum Order Quantity: 1

Standard Information

• Brand: EAGLE CUTTING TOOL
• Manufacturer Part Number: LHJ100-028-I