OMNI Racer Worlds Lightest Front Derailleur Adapter Dura Ace Ultegra 31.8mm SILV
NEWOMNI Racer Front Derailleur Braze-on Adapter Clamp. OMNI Racer WORLDS LIGHTEST Front Derailleur Adapter Clamp Shimano: 28.6mm BLACK. OMNI Racer Worlds Lightest Front Derailleur Adapter Record Chorus 34.9-35mm SIL.