NTN Bearings. Number printed on the item is 63072ZC3. Made in Japan. I acquired a bunch of this type of bearings as part of an auction lot and I know nothing about them except what's printed on the item and packaging. I'd like to clear them out, so I'm pricing them to where I make a few dollars after shipping. Please look carefully at the photos to see what you're getting. I offer combined shipping discounts and will refund the extra shipping paid on multiple orders. The shipping discount varies according to the size and weight of items, but small, lightweight items can often be added to an order for little or no additional shipping fees.