The primary purpose of this items is when a pipe breaks off in a fitting and you can't replace the pipe and/or the fittings. One end goes over the fitting, one end goes over the pipe. 5" x 4.5" (ACTUAL ID of the fitting) Fernco Rubber Flexible Coupling. These are designed to go OVER a 4" FITTING and connect to 4" Sch 40/80/CLass 100, 200, etc or other IPS pipe size pipe.) Flexible Rubber Fernco, for Cast Iron, Plastic, Copper, Steel or Lead to Cast Iron, Plastic, Copper, Steel or Lead. For details see Fernco Website or download the PDF spec sheet.
