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The IRWIN IR3041007 is a 1-inch diameter by 6-inch long wood boring bit designed for drilling clean, full-diameter holes through dimensional lumber, framing members, studs, and similar wood substrates. This type of bit is a standard tool for electricians, plumbers, HVAC installers, and general contractors who need to bore through wood framing to route pipe, conduit, or ductwork. The 1-inch cutting diameter and 6-inch working length make it suited for through-boring applications where a standard-length bit does not reach or where clearance is limited on one side of the work.
This bit is commonly used in residential and light commercial construction and retrofit work. Electricians use bits in this size range for running NM cable and conduit through studs and joists. Plumbers and HVAC technicians use them when routing supply lines, drain lines, or refrigerant line sets through framed walls and floors. The 6-inch length provides enough reach for most single-stud or single-joist passes without requiring an extension.
Designed for use with standard electric drills and drill/drivers that accept the appropriate shank type. Intended for boring through dimensional lumber, engineered wood, and similar wood framing materials.
This bit is installed and operated by electricians, plumbers, HVAC technicians, and carpenters working with standard corded or cordless drill equipment. Ensure the drill is set to an appropriate speed for the bit diameter before beginning a bore. When boring through structural framing, follow applicable building codes regarding hole placement and size relative to member dimensions to maintain structural integrity. Keep the work area clear of hidden wiring or pipe before drilling.
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