Hello there. Is for a sliding glass door? Hayfield has been associated with our 81-166S tandem roller at least once in our records. However this is hardly a guarantee; sliding glass door rollers can vary a tremendous amount even when you know the manufacturer. The only way to know for sure what you need is to remove the old roller and compare to see if it matches up. See the guides listed on this page. Let me know what you find.
Thanks for clarifying. I'm afraid I can't pinpoint that brand to any specific window roller in our database. Can you remove one and show us photos? I must be honest--window roller replacements can be very difficult to find, since many models are no longer made, and replacements must be exactly like the originals in order to work. Still, if you can remove one of the rollers and show us good photos of it, we'll do our best to see if we can help. In the time being, see our selection of window rollers here.