M4 Screwdriver Bit Extension, 175mm Length, 1/4-Inch Hex Drive

Brief Overview

This is a precision-engineered bit extension designed for electric screwdrivers and drill drivers requiring extended reach. The 175mm length provides significant standoff distance for countersunk or recessed fastening work, while the M4 receiving socket accepts standard M4-shank bits. The 1/4-inch hex drive shank couples directly to any standard drill chuck or quick-change adapter. Whether you're stocking shorter M4 extensions for general assembly or alternative drive configurations, this longer profile serves specialized applications where standard bit lengths fall short.

Key Features

• Extended Reach: 175mm overall length reduces the need for repositioning or awkward angles
• Precision M4 Socket: Accepts M4-shank screwdriver bits with secure engagement
• 1/4-Inch Hex Drive: Universal compatibility with all standard drill chucks and quick-change systems
• Chrome/Nickel-Plated Finish: Corrosion-resistant coating extends tool life in varied workshop environments
• Machined Steel Construction: Single-piece design eliminates weak points or joint failures
• Low Runout: Precision machining ensures concentricity for accurate bit positioning

Business Advantages for Resellers

This extension fills a critical gap in professional tool kits where standard 34–45mm bits prove too short. Mechanics, assembly technicians, and maintenance crews working on recessed or deeply-mounted fasteners regularly encounter situations requiring extended reach without power loss. Stock this alongside shorter variants to complete your extension lineup and reduce customer substitution purchases.

The low material cost and high markup potential make this a profitable SKU with predictable demand from automotive, machinery assembly, and precision manufacturing sectors.

Technical Specifications

Parameter	Specification
Drive Type	1/4-Inch Hex
Bit Socket	M4
Overall Length	175 mm
Material	Chrome/Nickel-Plated Steel
Catalog Number	A-1488/4

Close

For shops running high-volume assembly operations, this extension is a non-negotiable inventory item. Pair it with compatible Phillips or slotted M4 bits to offer customers a complete fastening solution and increase average order value.