Enduro 6806 2Rs Ceramic Cartridge, Id=30 Od=42 W=7 Go to amazon.com Related posts Top 13 bb30 bearings FeatureID=30 OD=42 W=7Commonly used in hubs, bottom bracketsFor BB30ABEC 5 level precision retainerKyodo Yushi PS-2 grease DescriptionCeramic balls with steel races