Product Description Replacement bearing to replace the Hope hub bearings. Specifications:Dimensions (Inner x Outer x Width):17 mm x 30 mm x 7 mmDesignation:6903 (61903)Models:Design:deep groove ball bearingsRecommended Use:HubBall Material:stainless steelSeals:both sidesCompatibility:Fatsno frontPro 2 Evo rearManufacturer Number:HUB3FAF Contents:2 x Hope S6903 spare bearings Manufacturer: Hope Mill Calf Hall Road Barnoldswick Lancashire BB18 5PX United Kingdom info@hopetech.com Distributor: bc GmbH Carlo-Schmid-Straße 12 52146 Würselen Germany info@bike-components.de