manufacturer part number: 33-164
2.5mm 4 Conductor Female - Female Coupler This adapter couples two 2.5mm 4-Conductor cables together. It features nickel plated conductors and a knurled body. 2.5mm 4-conductor connectors are hard to find, and most often found on cordless phones and industrial equipment.
Overall Dimensions: 1.5" Long x .36" Dia. QTY: 1 Coupler (Two Pictured)