Milwaukee 48-28-4008 3/8x12 Hex Shank Extension for Hole Saws

Product Description

The MILWAUKEE ELECTRIC TOOL CORP 48-28-4008 is a 3/8-inch by 12-inch hex shank extension designed for use with hole saws. It extends the reach of a hole saw arbor, allowing cuts in deeper or hard-to-reach locations without repositioning the drill. The 3/8-inch hex shank seats securely in 3-jawed chucks and is compatible with drills that have a 3/8-inch or larger chuck capacity. Electricians, plumbers, and general contractors rely on extensions like this when boring through wall assemblies, floor joists, or other thick substrates where a standard arbor setup falls short.

This extension is suited for residential and light commercial trade work where hole saw reach is limited by framing depth or fixture placement. It is commonly used during rough-in stages of electrical and plumbing installations, where through-boring multiple layers of structural material requires added extension length. The 12-inch reach covers the majority of standard stud and joist boring applications. It arrives in skin card packaging and is sold as a set of 3 units per package.

Key Features

• 12-inch extension length adds reach for deep or obstructed boring applications
• 3/8-inch hex shank fits standard 3-jawed drill chucks
• Compatible with drills rated for 3/8-inch or larger chuck capacity
• Designed specifically for use with hole saws
• Package includes 3 extensions per unit of measure

Compatibility

Designed as a hex shank extension for hole saw arbors on drills with a 3/8-inch or larger 3-jawed chuck capacity.

Installation Notes

Installation is performed by electricians, plumbers, and carpenters using standard corded or cordless drills. Ensure the drill is powered off and the trigger is locked before attaching or removing the extension. Confirm the hex shank is fully seated and the chuck is tightened securely before operating. Follow applicable codes and jobsite safety requirements when boring through structural members.

Technical Specifications

• Shank Size: 3/8 inches hex
• Extension Length: 12 inches
• Minimum Chuck Capacity: 3/8 inches
• Weight: 2.36 pounds
• Package Quantity: 3 per package

Standard Information

• Brand: MILWAUKEE ELECTRIC TOOL CORP
• Manufacturer Part Number: 48-28-4008