12" Bit Extension

Milwaukee 48-28-4006 – 12" Bit Extension for 7/16" Hex Shank Accessories

The Milwaukee 48-28-4006 is a 12-inch bit extension designed for extended reach in deep drilling and limited-access applications. Compatible with all accessories using a 7/16" hex shank, this extension is commonly used with selfeed bits, auger bits, and hole saw arbors in both wood and general-purpose drilling tasks.

Application Overview

Ideal for professionals in electrical, plumbing, framing, and mechanical trades, this extension enables drilling in wall cavities, between studs, or in overhead and below-floor assemblies. It is suited for use with drills equipped with a 1/2" chuck or 3-jawed chuck systems.

Key Features

• 12-Inch Extension Length – Provides added reach for drilling through studs, joists, or panels where standard bits fall short.
• 7/16" Hex Shank Compatibility – Accepts standard 7/16" shank bits including selfeed and auger types.
• Set-Screw Retention System – Uses a hex key to secure the bit into place, preventing slippage under load.
• Heavy-Duty Construction – Built for job site durability and repeat performance in high-torque applications.
• Drill Compatibility – Interfaces with standard 1/2" capacity chucks and 3-jawed chuck drills.

Technical Specifications

• Overall Length: 12 inches
• Shank Size: 7/16 inch hex
• Retention Method: Hex set-screw (hex key included)
• Tool Compatibility: 1/2" drills and 3-jawed chucks

Usage Notes

Secure the bit in the extension using the supplied hex key and confirm tightness before use. Always verify that your drill's chuck is rated to accommodate the torque requirements of the selected bit. This extension is intended for use in heavy-duty drilling operations where extended reach and bit stability are critical.