RJ11 or RJ12 6P6C 6 Pin Female Coupler. Connector type A - Female RJ12 6P6C. Connector type B - Female RJ12 6P6C. Can also be used for RJ11 applications were 4 pins are required. Adapter for Joining Cables Phone Ends.
This product would be ideal for connecting and extending phone cables, specifically in telecommunications or audio applications that require using 6P6C pin connectors.