Knog Bell Oi Classic Drop-Bar Bell (Large) Hydration Wide Trail (WT) casing optimized

Wide Trail (WT) casing optimized for 30-35mm wide rims

The revised Di2 platform featured on the DURA-ACE series is now standard with the ULTEGRA R8100 series

or other small things

Presta/Schrader compatible

2x square sizes

Knog Bell Oi Classic Drop-Bar Bell (Large) Hydration Wide Trail (WT) casing optimizedKnog Bell Oi Classic Drop Bar Bell: THE MOUNT What about the handlebar cables? No worries. Built into the shape of the mount is a cable management system. So not only does it allow the bell to look and sound uninterrupted, it also helps gather your cables (for the organiser inside us all). THE LOOK The Oi bells shape originates from its home the handlebar. Where bells usually protrude up or out, Oi doesnt. It appears to hover around the handle bars.