The oval Osymetrich chainrings from Stronglight
Stronglight Osymetric Chainring Kit, 5-arm, 110mm bolt circle, 52/38 teeth, colour: black, for Shimano and Sram
Stronglight Osymetric Chainring Kit, 5-arm, 110mm bolt circle, 50/38 teeth, colour: black, for Shimano and Sram
Stronglight Osymetric Chainring Kit, 5-arm, 130mm bolt circle, 52/42 teeth, colour: black, for Shimano and Sram
Stronglight Osymetric Chainring Kit, 5-arm, 130mm bolt circle, 54/42 teeth, colour: black, for Shimano and Sram
Stronglight Osymetric Chainring Kit, 5-arm, 110mm bolt circle, 50/38 teeth, colour: black, for Campagnolo
Stronglight Osymetric Chainring Kit, 5-arm, 110mm bolt circle, 52/38 teeth, colour: black, for Campagnolo
Stronglight Osymetric Chainring Kit, 5-arm, 135mm bolt circle, 54/44 teeth, colour: black, for Campagnolo
Stronglight Osymetric Chainring Kit, 4-arm, 110mm bolt circle, 50/34 teeth, colour: black, for Shimano
Stronglight Osymetric Chainring Kit, 4-arm, 110mm bolt circle, 52/42 teeth, colour: black, for Shimano
Stronglight Osymetric Chainring Kit, 4-arm, 104/64mm bolt circle, 38/28 teeth, colour: black, for Sram
Stronglight Osymetric Chainring Kit, 4-arm, for Shimano XTR FC-M980 crankset, 38/28-tooth configuration, colour: black
Stronglight Osymetric Chainring Kit, 4-arm, for Shimano XT FC-M785 crankset, 38/28-tooth configuration, colour: black