Lenox 30070 Hole Saw 4-3/8 Inches 4/6 Tpi

Product Description

The LENOX 30070 is a 4-3/8 inch (109mm) bi-metal hole saw designed for cutting clean, accurate holes in a wide range of materials encountered in trade work. The 70L designation indicates this saw runs a 4/6 variable-pitch TPI configuration, which balances fast material removal with reduced vibration and tooth loading. At 1.05 pounds, it is a full-size production tool suited for electricians, plumbers, HVAC techs, and general contractors who need consistent, repeatable hole quality through wood, thin metal, drywall, and composite materials on the job site.

The 30070 is used wherever a 4-3/8 inch bore is required — a common dimension when roughing in large conduit penetrations, cutting access holes for ductwork collars, or boring through framing for large-diameter pipe. It is sold as a single unit and is compatible with standard arbor systems. This size is frequently specified in commercial and residential mechanical rough-in work where code requires a consistent hole diameter across multiple penetrations.

Key Features

• 4-3/8 inch (109mm) cutting diameter for large-bore penetration work
• 4/6 variable-pitch TPI design reduces vibration and extends tooth life
• 70L product series designation for LENOX professional-grade hole saw line
• Sold individually — unit of measure is each
• Lightweight at 1.05 pounds for extended overhead or one-handed use

Compatibility

Designed for use with standard hole saw arbors compatible with 4-3/8 inch bi-metal hole saws. Consult your arbor manufacturer specifications to confirm fitment before use.

Installation Notes

Installation of this hole saw requires a compatible arbor and a variable-speed drill or drill press capable of handling large-diameter saws. Reduce RPM significantly compared to small-diameter bits — large hole saws require slow, steady speed to prevent tooth stripping and overheating. Always secure the workpiece and use appropriate PPE including eye protection. Electricians and plumbers should verify that no live conductors or pressurized lines are present behind the work surface before cutting.

Technical Specifications

• Cutting Diameter: 4-3/8 inches (109mm)
• TPI Configuration: 4/6 variable pitch
• Weight: 1.05 pounds
• Unit of Measure: Each
• Minimum Order Quantity: 1
• UPC: 082472300703

Standard Information

• Brand: LENOX
• Manufacturer Part Number: 30070