Box Components Cosine Narrow-Wide Chainring (Black) (104mm BCD) (2.5mm Offset) ... - BX-CR15M134T-BK
Box Components Cosine Narrow-Wide Chainring (Black) (104mm BCD) (2.5mm Offset) ... - BX-CR15M134T-BK, Box Components Cosine Narrow-Wide Chainring (Black) (104mm BCD) (2.5mm Offset) (34T) - BX-CR15M134T-BK