SRAM, X-SYNC 2 Bosch, Chainring, Teeth: 16, Speed: 12, BCD: Direct Mount, Single, Steel, Black

Shimano, XTR SM-CRM96, Chainring, Teeth: 30, Speed: 12, Front, Aluminum, Black, ISMCRM96AA0

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

SRAM, X-SYNC 2 Steel 6mm, Chainring, Teeth: 32, Speed: 11/12, BCD: Direct Mount, Single, Steel, Black

SRAM, X-Sync 2 Oval, 34T Chainring, 11/12sp, BCD: Direct Mount, Aluminum, Black, 6mm offset

SRAM, 34T, 10 sp, BCD 110mm, 5-Bolt, Inner Chainring, For 34/50, Aluminum, Black, 11.6215.197.020