Product Description Bearing kit for replacing the bearings of Hope rear hubs with SRAM XD freehub body. Specifications:Dimensions (Inner x Outer x Width):17 mm x 30 mm x 7 mm, 17 mm x 28 mm x 7 mm, 17 mm x 26 mm x 5 mmDesignation:6903 (61903), 17287, 6803Models:universal: Design: deep groove ball bearingsRecommended Use: hubsBall Material: stainless steelSeals: both sidesCompatibility:Pro 4 rear hubs SRAM XD freehub bodiesManufacturer Number:HUB3P4RXD Contents:2 x Hope S6903 spare bearings1 x Hope 17287 spare bearing1 x Hope S6803 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