Apex 84405 Impact Extension 3/8 Inch Drive 10 Inch

Product Description

The APEX 84405 is a 3/8 inch drive impact extension bar measuring 10 inches in length, built for use with pneumatic and electric impact wrenches in professional service environments. Constructed from chrome molybdenum alloy steel, this extension delivers the torsional strength needed to handle high-torque fastener removal and installation without deforming or cracking under load. A manganese phosphate finish provides corrosion resistance for tools exposed to shop fluids and outdoor conditions. Laser etched markings with secondary hard stamping keep size identification legible even after heavy use. This is a hand-tool for working mechanics, automotive technicians, and industrial maintenance professionals.

The 84405 is suited for automotive, fleet, and industrial applications where a 3/8 inch drive impact setup needs additional reach. The 10 inch length gives technicians clearance to access recessed fasteners in engine bays, suspension components, and equipment panels without repositioning the tool or the socket. It is sold individually and works alongside impact sockets and adapters in standard 3/8 inch drive impact sets.

Key Features

• Chrome molybdenum alloy steel construction for high torsional strength under impact loads
• Manganese phosphate coating resists corrosion from fluids and moisture
• Laser etched size markings with secondary hard stamping for lasting legibility
• 10 inch length provides extended reach for recessed or deeply set fasteners
• 3/8 inch drive tang compatible with standard impact sockets and wrenches

Compatibility

Designed as a standard 3/8 inch drive impact extension compatible with 3/8 inch drive impact sockets, adapters, and pneumatic or electric impact wrenches following the standard square drive interface.

Installation Notes

Impact extensions should only be used with impact-rated sockets and tools — do not substitute standard chrome hand-tool sockets on impact wrenches. Inspect the extension for cracks or deformation before each use and replace if any damage is found. Ensure the socket and extension are fully seated on the drive before applying torque to prevent slippage or fastener damage.

Technical Specifications

• Drive Size: 3/8 inch
• Length: 10 inches
• Weight: 0.53 pounds
• Material: Chrome molybdenum alloy steel
• Finish: Manganese phosphate
• UPC: 099575844058

Standard Information

• Brand: APEX
• Manufacturer Part Number: 84405