Shimano, Dura Ace FC-R9100, 39T Chainring, MW, 11sp, BCD: 110, Aluminum, Black

SRAM, 36T, 10 sp, BCD 104mm, 4-Bolt, Outer Chainring, For L-pin GXP, Aluminum, Black, 11.6215.188.430

Shimano, 105 FC-R7000, Chainring, Teeth: 39, Speed: 11, BCD: 110, Bolts: 4, Inner, Aluminum, Black, Y1WV39000

SRAM, X-SYNC 2 SL XX1 Eagle Lunar Grey 6mm, Chainring, Teeth: 32, Speed: 12, BCD: Direct Mount, Single, Alloy, Grey