SRAM, X-SYNC 2 X01 Eagle Polar Grey, Chainring, Teeth: 32, Speed: 12, BCD: Direct Mount, Single, Alloy, Offset 3mm, Grey

SRAM, Eagle T-Type Thread Mount 0mm Offset, Chainring, Teeth: 36, Speed: 12, BCD: Thread Mount, Aluminum, Black

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

Wheels Manufacturing, Shimano DM HG+ Outboard, Chainring, Teeth: 30, Speed: 12, BCD: Direct Mount Shimano, Single, 7075 Aluminum, Black