Irwin IR61128 Rotary Carbide Tipped Bit 1/2x4 in

Product Description

The IRWIN IR61128 is an economy-grade rotary carbide tipped bit designed for boring clean holes through wood, composite materials, and similar substrates. With a cutting diameter of 1/2 inch, an overall length of 4 inches, and a reduced 1/4 inch shank diameter, this bit fits standard rotary tool chucks and drill drivers without adapters. The carbide tipped cutting edge delivers extended wear life compared to standard high-speed steel bits, making it a practical choice for repetitive boring tasks on the job site or in the shop. The 7/16 inch hole diameter provides a reliable reference for pilot hole and finish bore applications.

This rotary bit is suited for use in residential and light commercial construction, trim carpentry, cabinetry, and general maintenance work. The reduced shank design allows it to seat in 1/4 inch chuck systems common on compact drills and rotary tools. It is sold individually and is appropriate for electricians, plumbers, and general contractors who need an economical carbide bit for occasional or production boring tasks where a full-price industrial bit is not required.

Key Features

• Carbide tipped cutting edge for extended durability over standard HSS bits
• 1/2 inch cutting diameter with 7/16 inch hole diameter
• 4 inch overall length for reach in deeper stock or stacked material
• Reduced shank at 1/4 inch fits standard compact drill and rotary tool chucks
• Economy tier pricing suited for general trade and maintenance applications

Compatibility

Designed as an OEM-style replacement or standard-fit rotary bit for 1/4 inch chuck rotary tools and drill drivers commonly used in light construction and maintenance trades.

Installation Notes

Install this bit into a 1/4 inch chuck and tighten securely before operation. Ensure the workpiece is clamped or secured to prevent movement during boring. Disconnect power from any tool before inserting or removing the bit. Follow applicable safety standards for rotary tool operation when working near wiring, piping, or structural members.

Technical Specifications

• Cutting Diameter: 1/2 inch
• Hole Diameter: 7/16 inch
• Overall Length: 4 inches
• Shank Diameter: 1/4 inch
• Shank Type: Reduced Shank
• Tip Material: Carbide Tipped
• Model Series: 611
• UPC: 042526611285
• Sold As: Each

Standard Information

• Brand: IRWIN
• Manufacturer Part Number: IR61128