Singer model SST.1300B. Supplies for it are outdated.
I found 2 dozen SUB-2 top-fill bags on eBay recently.
Need suggestions for the belt. I have a parts diagram that references BI-32026 / SDB2.
Searching those numbers doesn't find much. One source has SDB2 but says it doesn't fit SST self-propelled models, of which mine is one.
What are suitable substitutions?