Knog Oi Classic Bike Bell Color:Black It is compatible with both

It is compatible with both IG and HG chains

and Shimano Ultegra R8025 hydraulic brake/shift levers

+ Our reflector ensures added visibility and safety

● Thickness: 6 mm

• EFFICIENT KNOB SPACING

Knog Oi Classic Bike Bell Color:Black It is compatible with bothBike bells generally look & sound a bit ugly. But why? What if they looked sexy & sounded like an angel playing a glockenspiel? A bell with a beautiful tone, but also a remarkable style and choice of materials that embodies a riders personality. The Large size fits 23. 8 31. 8mm bars, while the Small fits 22. 2mm bars. Consult the size guide here to decide which size is right for you. No Ordinary Bike Bell Reinventing a 2,000 year old bell design was