I retrieved the old Rino Extreme, cut off the two ends past where dog had bitten holes, refitted the ends which was easy. There is wire reinforcement in the outside pleats. Bought packet of new gaskets. They fit the old end that engages the sewer end and the other end which fits the coach. They would not have fitted the new Rino Flex. Same as inch to metric comparison. Had ten foot extension in the bay.Between the two pieces I have about 25' if needed. The extra end I bought would not fit the od Rino Extreme tubing. So If i can find the stiff Rino Extreme tubing, with the package of gaskets and the old ends we can rebuild it for a long time if needed.