10x BT Extension Telephone Wall Socket IDC Secondary Outlet Plate 1/3a

10x Single BT Wall Extension Socket (Mini)Number coded screw terminals for easy installation. Extension socket size is 55mm x 55mm and comes with its own back box.An IDC insertion tool is also supplied for free Plate Quantity x 10 Used for - This BT extension socket should be connected to either a master socket or another extension socket