22O6510 up for sale is a universal replacement brand 1 inch mark III bearing set for a garage door system , this is marked part number 38-2090-01 new old stock parts bag is a little old and dirty but product looks good inside , these have a rubber housing and a bronze bushing in the 1 inch bore , the OD of the rubber that presses into the bracket is 1.824 inch just under 1 7/8 diameter , the total width is 1 inch the rubber part has a flange that is 1/8 wide x just under 2 inch diameter , nice parts for your garage repair project , see our store for more items like this we add new items weekly , thank you RWK