Sioux Chief 390-50197 Telescopic Basin Wrench with 3/8" to 1-1/8" Jaw Capacity

Sioux Chief 390-50197 Telescopic Basin Wrench with 3/8" to 1-1/8" Jaw Capacity

The Sioux Chief 390-50197 Telescopic Basin Wrench is a rough-in plumber's hand tool built to reach and turn faucet and supply-line mounting nuts in the cramped space behind a sink bowl. The handle telescopes to 9-1/2", 12", 14", and 16-1/2" so one wrench adjusts to the working depth of the cabinet instead of forcing a tech to carry multiple fixed-length wrenches. The spring-loaded jaw opens from 3/8" thru 1-1/8" to grip hex and knurled mounting nuts on faucets, sprayers, and supply connections, and the tool is manufactured in Taiwan. Because the handle telescopes rather than shipping as a single fixed length, the same wrench covers shallow vanity cabinets and deeper base cabinets without a plumber needing to stock a separate tool for each depth, and the jaw's wide 3/8" to 1-1/8" range means it doesn't need to be swapped out between a small supply-line coupling nut and a larger faucet mounting nut on the same service call.

Key Features

• Telescoping Length: Extends to 9-1/2", 12", 14", or 16-1/2" to reach mounting nuts at varying depths behind sinks and lavatories.
• Jaw Capacity: Spring-loaded jaw opens from 3/8" thru 1-1/8" to grip a wide range of faucet, sprayer, and supply-line nuts.
• One-Hand Nut Engagement: Pivoting, self-adjusting jaw head seats on the nut from below so the tech can turn it with limited visibility and limited arm clearance.
• Compact for Storage: Collapses down from its extended length for storage on a service truck or in a tool bag between calls.
• Country of Origin: Manufactured in Taiwan.

Technical Specifications

• Country of Origin: Taiwan
• Jaw Capacity: 3/8" thru 1-1/8"
• Extended Length Settings: 9-1/2", 12", 14", 16-1/2"
• Packaging: 20 EA per case

Typical Applications

• Faucet and supply-line mounting nut removal and installation under kitchen and bathroom sinks
• Residential and commercial plumbing rough-in and service calls
• Tight-clearance cabinet work where a standard wrench or pliers cannot reach the nut
• General MRO and repair plumbing where fixed-length basin wrenches fall short

Why Sioux Chief?

Sioux Chief builds rough-in plumbing hardware and tools for working plumbers, and the 390-50197 telescopic basin wrench is sized to do one job well: get a wrench onto a mounting nut that a standard tool can't reach. The adjustable 9-1/2" to 16-1/2" length and 3/8" to 1-1/8" jaw capacity cover the range of nut sizes and cabinet depths a plumber runs into on typical faucet and supply-line service calls, making it a practical addition to a rough-in or service tool bag, whether the call is a new faucet install, a supply-stop swap, or a routine sink repair where reach and jaw range matter more than raw torque.