Check the listing for details. CERAMIC BALL BEARING KIT 1/4" BALLS 36 PIECES. Condition: New. Listed at 30.68 USD. CERAMIC BALL BEARING KIT 1/4" BALLS 36 PIECES Si3N4 GRADE 5 BALLS Kit includes size: (36pcs) We combine shipping. What some of our recent buyers are telling us about upgrading to our ceramic bearings: I just installed my new bearings; Wow, what a difference! Excellent upgrade! Great price! Thanks HubDoctor® Excellent service, fast shipping, great price, the best ceramic bearings on Ebay! Fast Shipping, Superb Quality, Purchase with confidence from this dude!! Free shipping in the USA! Check out our other items,Including our HubDoctor® Mavic® Freehubs Rebuild Kits The cost-saving solution for rebuilding Mavic® cassette hubs. See our other listings for the HubDoctor® Pro ceramic ball bearing freehub bushing replacement kit and our superior freehub replacement bushings! Ceramic Ball images are for visual purposes.