Shimano, Tiagra FC-4703, Chainring, Teeth: 30, Speed: 10, BCD: 74, Bolts: 4, Inner, Steel, Grey, Y1RD30000

SRAM, 42T, 10 sp, BCD 120mm, 4-Bolt, All 28/42, Outer Chainring, For L-pin GXP 2x10, Aluminum, Black, 11.6215.188.240

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

SRAM, X-Sync, 3mm offset, 36T, 12sp., BCD: Direct Mount, Single Chainring, Aluminum, Black

Shimano, Tiagra FC-4700, Chainring, Teeth: 50, Speed: 10, BCD: 110, Bolts: 4, Outer, Aluminum, Grey, Y1RC98050

Shimano, XT SM-CRM86, Chainring, Teeth: 32, Speed: 12, Front, Aluminum, Black, ISMCRM86A2