Stegbar Sliding door rollers

I am trying to find replacement sliding door roller assemblies for sliding aluminim glass doors now over 40 year old. The Australian Manufacturer (Stegbar) tells me they are no longer available.

I found your products on the internet and I think one of them might do the job.

I attach a scan of the old one and your (hopefully)equivalent of 81-084 and would appreciate your view of whether yours will work.

Many thanks,

David

Metric measurements in inches are as follows:
18 mm is slightly less than 3/4 inch
30 mm is about 1 3/16 inches
60 mm is about 2 3/8 inches

I think the wheel is about 32 mm, or slightly more than 1 1/4 inches.

So overall the dimensions seem to match up pretty well. Worth a try?