I am getting a set of springs made for a Columbia Hard tire safety seat. The mens and womens are the same. If anyone is interested in a set, they will be cheaper to produce in quantity rather than just one set. Being made by a local spring shop here. Please let me know if you are interested and I will get you the price once a have an idea how many we will make. I am currently waiting on a price for one set, but he will be making at least 5 sets no matter what.