Eagle Cutting Tool 1090-120-I Hss Slow Spiral Drill Bit

Product Description

The EAGLE CUTTING TOOL 1090-120-I is a high speed steel (HSS) slow spiral drill bit sized at 1-5/16 inches with a 1/2-inch reduced shank. Slow spiral geometry reduces cutting speed and chip evacuation rate, making this bit well suited for drilling soft, gummy, or fibrous materials where standard twist drills tend to grab or clog. The HSS construction provides hardness and wear resistance across a broad range of workpiece materials. This bit is intended for use in stationary drill presses or heavy-duty hand drills and is a common tool for plumbers, pipefitters, HVAC techs, and electricians drilling large-diameter holes through wood, plastic, and soft metals.

This drill bit is used in trade applications where oversized holes are required in soft or medium materials. Common scenarios include drilling through wood framing, plastic conduit bodies, fiberglass panels, and similar substrates during mechanical, electrical, or plumbing rough-in work. The 1/2-inch shank allows use in standard 1/2-inch drill chucks found on most heavy-duty corded drills and drill presses. The slow spiral flute design is especially practical when cutting material that tends to climb or bind on conventional high-helix bits.

Key Features

• 1-5/16 inch cutting diameter for large-bore hole applications
• 1/2-inch shank fits standard heavy-duty drill chucks
• High speed steel construction for hardness and wear resistance
• Slow spiral flute geometry reduces grabbing in soft or fibrous materials
• Single minimum order quantity available for individual replacement needs

Compatibility

Designed as an OEM-style replacement or standard trade drill bit for use in any 1/2-inch chuck-equipped drill press or heavy-duty corded drill requiring a 1-5/16 inch HSS slow spiral bit.

Installation Notes

Installation is performed by machinists, pipefitters, electricians, and general trade professionals using a drill press or 1/2-inch chuck corded drill. Secure the workpiece firmly before drilling to prevent movement or kickback on large-diameter bits. Always verify chuck tightness before operation. Follow applicable shop safety standards and wear appropriate eye protection when operating cutting tools.

Technical Specifications

• Cutting Diameter: 1-5/16 inches
• Shank Diameter: 1/2 inch
• Flute Type: Slow Spiral
• Material: High Speed Steel (HSS)
• Weight: 1.2 pounds
• Minimum Order Quantity: 1

Standard Information

• Brand: EAGLE CUTTING TOOL
• Manufacturer Part Number: 1090-120-I