sliding screen patio door wheel

A handy person from USA says:
I am repairing a sliding screen patio door. To the best of my measuring, your 84-064 appears to be an exact replacement for the wheels.

My question is: Is the 84-083 a BETTER replacement, as it has the steel wheel. There are fewer dimentions to compare, and the spacing of the holes on the bottom tab being 1/16th of an inch wider seems to not be an issue as the unit snaps into the bottom of the door
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Tom from SWISCO responded:
The 84-083 could replace the 84-064, but I wouldn't necessarily say it's "better." There are pros and cons. Steel is stronger, and can support more weight, but it is vulnerable to corrosion and it could wear your tracks down more quickly.
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