Williams Comfort Products 4-102 Impact Extension

Product Description

The WILLIAMS COMFORT PRODUCTS 4-102 is a 0.5 inch drive impact extension measuring 3.5 inches in length. Designed for use with 0.5 inch drive impact wrenches and ratchets, this extension provides added reach in tight or recessed fastener applications. It is built to handle the high-torque, high-vibration demands of impact tool use, making it a reliable choice for professional tradespeople working in mechanical, HVAC, plumbing, and electrical installation environments where standard extensions may not reach.

This impact extension suits residential and commercial service work where 0.5 inch drive impact tools are standard. Mechanics, HVAC technicians, and general tradespeople will find it useful when fasteners are set deep in equipment housings, panels, or structural assemblies. Its compact 3.5 inch length fits in toolboxes and service bags without bulk, while still providing meaningful extension over a standard socket setup.

Key Features

• 0.5 inch drive compatible with standard impact wrenches and ratchets
• 3.5 inch length provides reach in recessed or tight fastener locations
• Built for impact-rated use, handling high torque and vibration
• Lightweight at 0.327 pounds for easy handling and portability
• Sold individually for single-unit replacement or toolbox additions

Compatibility

Designed as an OEM-style replacement and standard-fit accessory for 0.5 inch drive impact wrenches, ratchets, and related drive tools used across trade and mechanical service applications.

Installation Notes

Ensure the impact wrench or ratchet is powered down or disconnected before attaching or removing the extension. Inspect the drive square and retention groove for wear before use with high-torque applications. This extension is rated for impact use only; avoid using it with non-impact drive tools where snap ring retention may differ. Follow applicable workplace safety guidelines when operating impact tools in confined spaces.

Technical Specifications

• Drive Size: 0.5 inches
• Extension Length: 3.5 inches
• Weight: 0.327 pounds
• UPC: 662459252005
• Sold As: Each

Standard Information

• Brand: WILLIAMS COMFORT PRODUCTS
• Manufacturer Part Number: 4-102