I am working on an old snowblower attachment for my garden tractor. I bought it used and have no idea of the age or make as there are no tags of any kind on it. I needed a tension spring for the belt tensioner as its missing. I tried to find someone with a selection of universal springs but nobody seems to stock much anymore. I was looking through the Canadian Tire website and came across trampoline springs. I ordered a box of 5.5 long springs and they were less than $30 for twelve springs. I am sure that the spring will work and the price was okay also. (I paid that much for one spring for my mower from the dealer). I thought that there may be some interest here because maybe they could be used for a clutch or brake pedal return spring.