1-Inch Drive Impact Extension Bar, 325mm Length

Brief Overview

This is a heavy-duty impact extension bar designed for 1-inch square drive impact wrenches and sockets. The 325mm length provides extended reach for fasteners in tight or recessed mounting positions—essential for industrial maintenance, automotive heavy-duty repair, and machinery service work. The solid steel construction is impact-rated for pneumatic impact wrench use, making it far more durable than chrome vanadium bars for high-torque applications. If you stock multiple drive sizes, complement this with smaller 3/4-inch drive extensions or compact 1/2-inch drive impact bars to serve a full range of customer needs.

Key Features

• 1-Inch Square Drive Compatibility: Fits all 1-inch drive impact wrenches and impact sockets
• 325mm Extended Length: Reaches fasteners in deeply recessed or hard-to-access positions
• Impact-Rated Steel Construction: Hardened steel body rated for pneumatic impact wrench torque; resists cracking and fracture under shock loads
• Detent Hole Design: Small circular hole near the drive collar secures the bar to the wrench with a detent pin, preventing unintended separation during operation
• Retaining Pin Provision: Hole through the solid shaft end allows attachment of a safety clip or retaining pin for secure storage and transport
• Matte Black Finish: Corrosion-resistant surface suitable for workshop and field environments
• Circumferential Grooves: Shallow grooves near the collar provide a secure grip point and help distribute impact force

Why Resellers Choose This Extension

High Margin on Essential Add-Ons: Impact extension bars are frequently purchased alongside impact sockets and wrenches. Customers upgrading their pneumatic tool kits expect to find quality extensions in stock—this product addresses that demand.

Durability Justifies Price: Impact-rated construction means fewer warranty claims and customer returns compared to standard chrome vanadium extensions. Your reputation for reliability grows with every sale.

Drive-Size Completeness: The 1-inch drive size is popular in heavy commercial and industrial sectors. Having 325mm extensions in stock positions you as a complete source for impact tool systems, not just individual sockets.

Bulk Order Opportunity: Customers who buy one extension often need multiples for different tool carts, mobile units, or fleet maintenance. This is a repeatable order item.

Technical Specifications

Specification	Detail
Drive Size	1-inch square drive
Drive Type	Female (recessed)
Overall Length	325mm
Outer Diameter	54mm
Material	Impact-rated hardened steel
Finish	Matte black (corrosion-resistant)
Detent Feature	Circular hole near collar for pin retention
End Style	Rounded solid shaft with retaining pin hole
Application	Pneumatic impact wrenches; not suitable for manual (hand) tools
Rating	Impact-rated (suitable for high-torque pneumatic use)

Application Context

This extension is built for demanding industrial environments:

• Heavy Truck Maintenance: Reaching wheel fasteners, suspension bolts, and exhaust brackets on large vehicles
• Equipment Service: Accessing bolts on agricultural machinery, construction equipment, and industrial plant fasteners
• Automotive Transmission/Engine Work: Reaching deep recesses where standard-length sockets fall short
• Fleet Maintenance Shops: Installing as standard equipment in pneumatic impact systems for consistency and reliability

The 325mm length is the sweet spot between reach and control—long enough to be genuinely useful, but short enough to remain manageable in tight quarters.

Stock and Order Advantage

Impact extension bars have a long shelf life and are non-perishable. Stock rotation is minimal, and margins remain stable. A bulk purchase of 10–20 units provides your customers with options across drive sizes while maintaining healthy profit per unit.

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Ready to add impact-rated extensions to your inventory? This 1-inch drive bar is a cornerstone product for any shop stocking pneumatic impact tools. Contact us for volume pricing on single or mixed-drive-size orders.