The rollers axels fit in a track with holes for the axel extensions. The rollers are plastic but metal would work also if it's the right size-approx 3/4 of an inch.
Paul from SWISCO responded:
May 13, 2019
Many thanks for writing in. We believe your door channel uses same wheel on the 84-001 roller assembly. You would have to drill out the axle on the 84-001 to be able to use the rollers on your door channel.