Enduro Standard Design Cartridge Bearings.

• 90% filled with Mobilux NGLI 2 synthetic grease, dual-lip labyrinth seals
• If the bearing you are replacing is not marked with a manufacturer number, measure it and compare to specifications listed
• For some DT, Bontrager and Giant applications
• Replaces 6903 bearings with 18mm bore in DT Swiss hubs