Product Description Spare bearing kit to replace the bearings of Hope rear hubs. Compatible with all Pro 2 Evo rear hubs with Shimano freehub - no matter which axle option is installed. Specifications:Dimensions (Inner x Outer x Width):17 mm x 30 mm x 7 mm, 17 mm x 26 mm x 5 mm, 17 mm x 28 mm x 7 mmDesignation:61903, 6803, 17287Models:universal: Design: deep groove ball bearingsRecommended Use: hubsBall Material: stainless steelSeals: both sidesCompatibility:Pro 2 Evo rear hubs Shimano freehub bodiesManufacturer Number:HUB3P2ER Contents:2 x Hope S61903 spare bearings2 x Hope S6803 spare bearings1 x Hope S17287 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