It's a HP Designjet 500, Belt kit [D-size 24"] SKU C7769-60182-K. I have the kit. If one goes to search HP designjet 500 carriage belt you'd be able to view the video that I have in the kit. Just need Geeks On Repair to install this for me.
GEEKS ON REPAIR FIX AND INSTALL CONPUTERS AND PRINTERS OF ALL TYPES.
WE INSTALLED THIS PRINTER FOR OUR CUSTOMER WHO CALLED US AND THEN WROTE US THAT PARAGRAPH, FROM MOUNTAIN HOME IDAHO