(2 PACK) 6902-2RS Sealed Full Ceramic Bearing ZrO2 Ball Bearing 15x28x7mm Go to amazon.com Related posts Which is the best 6902 bearing ceramic? FeatureItem: 6902 Full Ceramic Ball BearingDimensions: 15mm x 28mm x 7mm/MetricCage: PTFEBalls: ZrO2 CeramicInner/outer races: ZrO2 Ceramic DescriptionPackage: 2pcs Full Ceramic Bearing ZrO2 Ball Bearing