AV:Link 283.009UK Coupler RJ11 6P4C Socket - RJ11 6P4C Socket

US21-Modular-Cord-Coupler-6P4C-AV-Link-283-009UK-p-This-female-coupler-enables-two-RJ11-modular-cords-with-male-connectors-to-be-joined-together-p-AV-Link-283-009UK-Coupler-RJ11-6P4C-Socket-RJ11-6P4C-Socket

Price: 1.43 from Rapid Online Rapid Electronics Ltd.