Abstract: A device comprising a slidable fastener or slidable fastener stringer affixed to a hollow channel member, wherein said channel member has an upper and a lower edge defining a longitudinal opening for receiving and holding the interlocking elements and/or a portion of the tape of a stringer belonging to an inoperable slidable fastener. The device of the present invention is used particularly to remedy the problem of an inoperable fastener already installed in the article, without removing the inoperable fastener from its article, by connecting the present invention to the old stringer/fastener thereby interposing a functioning fastener/stringer in said article between the stringers of the existing, inoperable fastener.