Replacement inserts for board racks

This is replacement insert (or cord) used on Nautique spinner and fixed racks (not flight clips) in the 2005-2008 Range. One set should do your full set of racks (both sides of tower). This replacement has changed from some of the original inserts- this does not have a lip or square edge- it is round. We have installed and find it actually seems to stay in the track better then the square insert.