This slimline telephone extension kit is an easy to use telephone extension kit that is perfect for discreetly installing a telephone socket in your home. Connect to an existing BT outlet to provide a discrete extension socket up to 25m away. The extension is 25m long, and its slimline and clear construction means it can be installed under wallpaper, carpets and vinyl flooring and around skirting boards and doors. Kit contains one BT plug to the socket, RJ11 socket and one RJ11 socket to BT socket. 25m long. Always read instructions.