3/4-Inch Drive Extension Bar, 400mm Chrome Vanadium Steel

Overview

This 400mm extension bar extends your reach on deep-set fasteners and recessed components in engine bays, frames, and industrial assemblies. The polished chrome-vanadium steel construction resists corrosion and wear, making it reliable for daily shop use. The spring-loaded detent ball at the drive end ensures sockets stay firmly seated during operation. For applications requiring different reach options, consider pairing this with shorter 200mm extensions or impact-rated variants for pneumatic tool compatibility.

Key Features

• 400mm working length – Reaches into deep engine compartments and recessed fastener locations
• Chrome vanadium steel construction – Durable, corrosion-resistant material suitable for professional shop environments
• Polished finish – Easy to clean and maintain; resists surface oxidation
• Spring-loaded detent ball – Securely retains sockets, preventing accidental disengagement
• Female receptacle inlet – Accepts 3/4-inch square drive accessories; retaining pin hole for optional clip retention
• Male square drive outlet – Drives standard 3/4-inch sockets and attachments
• Smooth cylindrical shaft – Reduced friction during insertion into tight spaces

Why This Extension Matters for Your Business

Stock Depth & Turnover: Extended reach extensions are high-demand consumables in every professional shop. The 400mm length fills a critical gap between short (125–200mm) and ultra-long extensions, capturing repair jobs that require significant reach without the bulk of longer bars.

Durability & Customer Confidence: Chrome vanadium steel with a detent ball system builds customer trust. No socket slippage = no stripped fasteners = fewer callbacks and repeat orders from satisfied mechanics.

Bundling Opportunity: Pair with impact-rated 325mm extensions to offer shops a complete reach toolkit for both hand and pneumatic applications.

Technical Specifications

Specification	Value
Drive Size	3/4" (male outlet, female inlet)
Overall Length	400 mm
Material	Chrome Vanadium Steel
Finish	Polished Chrome
Detent Ball	Spring-loaded, integrated
Retaining Pin Hole	Yes
Weight	~1.2 kg (approx.)
Orientation	Straight

Closing Thought

This extension bar is a workbench essential. Stock it in your catalog as a standalone item or bundle it with complementary tools. The 400mm length is one of the most frequently requested sizes—shops need deep reach, and this delivery mechanism is bulletproof.