High Quality: RJ-11 6P4C telephone extension cord is made from high-quality material for long use | Wide Application:This telephone cords for landline phone comes with two RJ11 standard phone connectors on both ends and 1 inline coupler, which can be used for telephones, fax machines, modems, answering machines, etc | Smooth communication: The copper core in the plug needle wire ensures signal transmission and smooth communication | Convenient connection: The telephone can be placed 33 Ft away from the wall phone jack,easy to use | Product After-sales: If you are not satisfied with the telephone extension cord,you can contact us at any time, and we will serve you wholeheartedly