3/8-Inch Drive Extension Bar, 125mm Chrome Vanadium Steel

Overview

This 125mm extension bar is a practical mid-range solution for socket work requiring moderate reach. Built from chrome vanadium steel with a polished finish, it delivers the durability and corrosion resistance your shop expects from daily-use hand tools. The design accommodates standard 3/8-inch drive sockets with reliable ball-detent retention and pin-hole locking on the female end. Stock this length alongside shorter 75mm extensions and longer 150mm bars to cover the full spectrum of customer reach requirements.

Key Features

• 125mm working length – Ideal for confined engine bays and standard assembly work
• Chrome vanadium construction – Proven material for impact resistance and longevity
• Polished chrome finish – Professional appearance with corrosion protection
• Ball-detent socket retention – Secure fit prevents socket dropout during use
• Pin-hole locking engagement – Female end accepts locking pins for fixed-length applications
• Straight, non-wobble design – Precise alignment for critical fastening work

Why This Extension Drives Reseller Value

Margin-Friendly Stocking: Mid-length extensions (75–200mm range) represent the highest-turnover products in any socket set resale. This 125mm length fills the critical gap between short and long extensions, encouraging customers to buy complete sets rather than individual pieces.

Versatile Application Base: From automotive assembly to general maintenance, 125mm coverage handles 60–70% of typical fastening scenarios. Lower return rates compared to specialty lengths mean predictable inventory costs.

Bundle Compatibility: Pairs seamlessly with 3/8-inch socket sets and impact tools. Resellers can upsell as part of a "professional mechanic's kit" or offer tiered extension packs.

Technical Specifications

Specification	Detail
Drive Size	3/8-inch square drive
Length	125mm
Material	Chrome vanadium steel
Finish	Polished chrome
Locking Feature	Pin-hole engagement (female end)
Retention	Spring-ball detent (male end)
Weight	Approximately 0.15–0.20 kg
Drive Type	Straight (non-wobble)

The Bottom Line

Stock this 125mm extension as a high-velocity SKU. It's the length professionals reach for first, the one that ships fastest, and the one that keeps customers coming back when they need to expand their tool collections.