Note: Should you enter key phrase "6303RMX" into eBay or Amazon, you will notice The supply of aftermarket sizing bearings - 10X42X13. "6303RMX" is stamped on the OEM idler #2 bearings. I've solid doubts about these currently being quality bearings, such as the Koyo bearings labeled as being designed in https://arlinkdirectory.com/listings13236871/not-known-factual-statements-about-debt-collection-service-in-anaheim