Importer520 White RJ45 Plug to BT RJ11 Socket Telephone Secondary Adapter Product Name : Master Telephone Adapter;Plug Type : Male RJ45 (8P4C) Socket Type : Female BT (6P6C),Female RJ11 (6P4C);Material(External) : Plastic Size: Socket Case: ~2 1/16" x 15/16" x 3/4" (L*W*H); Cable Length: ~4 1/2" Material(External): Plastic