

Ships same day if ordered by 12 pm
Manufacturer pricing rules prevent us from advertising our discount — no account or email required to see it.
Secure Payments
Easy Returns
Expert Advice
Fast Shipping
The WILLIAMS COMFORT PRODUCTS ISSXTM616 is a tension-type flextension designed for use with 1/2-inch drive sockets. The 16MM drive head and 6-inch shank allow technicians to reach fasteners in confined or awkward spaces where a standard rigid extension cannot fit. The flexible shaft transmits torque while maintaining tension, reducing the risk of the extension going slack during use. This tool is sold individually and is a standard item for HVAC, plumbing, and electrical tradespeople who regularly work around equipment cabinets, panels, and tight mechanical assemblies.
The ISSXTM616 suits applications where straight-line access to a fastener is not possible. Common install scenarios include tightening or loosening fasteners behind ductwork, inside equipment enclosures, around pipe runs, and in tight electrical panel spaces. The 6-inch shank gives enough reach to clear obstructions without sacrificing control. Weighing 0.57 pounds, it adds minimal weight to a tool bag and handles the access demands typical in residential and light commercial service work.
Designed for use with standard 1/2-inch drive sockets and ratchets as an OEM-style flexible extension for trade service applications.
This flextension is installed by licensed HVAC technicians, plumbers, and electricians as part of routine fastener access work. Always power down or de-energize equipment before using tools inside electrical panels or mechanical enclosures. Ensure the socket is fully seated on the drive head before applying torque to avoid slippage. Do not exceed the rated torque capacity of the connected socket or fastener.
Thanks for subscribing!
This email has been registered!