Irwin 373138BX Bi-metal Hole Saw 1-3/8 Inches

Product Description

The IRWIN 373138BX is a bi-metal hole saw designed for cutting clean, accurate holes in a range of materials including wood, plastic, and light-gauge metal. At 1-3/8 inches in diameter, it suits applications where precise, tight-tolerance openings are required. The bi-metal construction combines a high-speed steel cutting edge with a flexible alloy steel body, delivering durability under repeated use. Electricians, plumbers, and HVAC technicians reach for this size when routing conduit, pipe, or duct penetrations through framing, panels, and enclosures.

This 1-3/8 inch hole saw is a practical choice for residential and light commercial work where consistent hole diameter and blade longevity matter. Common applications include boring holes for conduit fittings, plumbing stub-outs, and cable pass-throughs in wood studs, drywall backer, and thin sheet materials. It is sold individually, making it a straightforward replacement or addition to an existing hole saw kit.

Key Features

• Bi-metal construction for extended cutting life compared to carbon steel saws
• 1-3/8 inch cutting diameter suitable for conduit, pipe, and cable routing
• Compatible with standard arbor systems used in most drill drivers and drill presses
• Sold individually — minimum order quantity of one unit

Compatibility

Designed as an OEM-style replacement or standalone bi-metal hole saw compatible with standard hole saw arbors used in professional drill drivers and drill presses.

Installation Notes

Hole saws of this type are installed by licensed electricians, plumbers, and HVAC technicians as well as experienced contractors. Secure the workpiece before cutting and ensure the arbor pilot bit is properly seated before beginning the cut. Use appropriate speed settings on the drill — lower speeds generally produce cleaner cuts in harder materials. Always wear eye protection and follow applicable safety codes for the trade task being performed.

Technical Specifications

• Type: Bi-Metal Hole Saw
• Cutting Diameter: 1-3/8 inches
• Sold As: Each
• Minimum Order Quantity: 1
• UPC: 024721000262

Standard Information

• Brand: IRWIN
• Manufacturer Part Number: 373138BX