Williams ISFXTM416 Flex Extension Socket 16mm 3/8 Drive

Product Description

The Williams Comfort Products ISFXTM416 is a flex extension socket designed for use with 3/8 inch drive ratchets and socket sets. This socket features a 16mm socket head paired with a 4 inch extension, allowing technicians to reach fasteners in tight or angled locations where a standard socket would not fit. The flexible extension joint provides articulation at the drive end, making it useful in confined engine bays, mechanical rooms, and equipment panels. It is sold individually and suited for use by HVAC technicians, plumbers, and general service professionals.

This flex extension socket is used in trade and mechanical service applications where fastener access is restricted by surrounding components or structural barriers. The 16mm sizing and 3/8 inch drive make it compatible with common metric fastener configurations found in HVAC equipment, pumps, and mechanical assemblies. It is a practical addition to any service technician toolkit handling residential or light commercial equipment maintenance and repair.

Key Features

• 16mm socket size for metric fastener applications
• 3/8 inch drive fits standard ratchets and breaker bars
• 4 inch length provides extended reach in confined spaces
• Flexible joint allows angled access to recessed or obstructed fasteners
• Sold as a single unit

Compatibility

Designed for use with standard 3/8 inch drive ratchets, extensions, and socket sets. Compatible with metric fasteners sized at 16mm across mechanical, HVAC, plumbing, and general trade applications.

Installation Notes

This socket is handled by any trade professional performing mechanical service work requiring metric fastener removal or installation. Ensure the drive connection is fully seated before applying torque to avoid slippage or socket damage. Do not use this tool with impact drivers unless it is rated for impact use. Confirm all power and energy sources are isolated before beginning fastener service on energized equipment.

Technical Specifications

• Socket Size: 16mm
• Drive Size: 3/8 inch
• Extension Length: 4 inches
• Unit of Measure: Each
• Minimum Order Quantity: 1
• UPC: 662459335159

Standard Information

• Brand: Williams Comfort Products
• Manufacturer Part Number: ISFXTM416