Looking for glass door wheels

A handy person from Kailua Kona, Hawaii says:
looking for 4 of these wheels. Can you help?
Profile picture of Dave Sr.
Dave Sr. from SWISCO responded:

This is an older style roller used by International doors. I'm afraid it was discontinued and is no longer available. That said, take a look at our 81-139. This is the newer style and I believe it should fit your door. 

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