

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 RIDGID RD31405 is a 342 Internal Wrench designed for gripping and turning internally threaded fittings, couplings, and pipe sections from the inside. This tool is built for trade professionals who need controlled torque on recessed or internal connections where a standard wrench cannot reach. It is commonly used in plumbing, pipefitting, and mechanical service work where removing or installing internal fittings requires a precise, secure grip without damaging the surrounding material.
The 342 Internal Wrench is suited for professional use in residential and commercial plumbing and pipefitting applications. It is typically deployed during service, repair, or new installation work where access to external surfaces of a fitting is restricted. Licensed plumbers and pipefitters rely on internal wrenches to back out damaged or recessed fittings and to seat new connections firmly in confined spaces.
Designed as an OEM-style specialty hand tool for use in professional plumbing and pipefitting applications where internal wrench access is required.
This tool is used by licensed plumbers and pipefitters working on pipe and fitting assemblies. Always shut off water supply and depressurize the line before servicing any fitting. Ensure the wrench size matches the internal dimension of the fitting before applying torque to avoid slippage or damage. Work follows applicable plumbing codes including IPC guidelines for fitting installation and removal.
Thanks for subscribing!
This email has been registered!