Shimano, GRX FC-RX600 1x11, Chainring, Teeth: 40, Speed: 11, BCD: 110, Bolts: 4, Single, Aluminum, Black

Shimano, Y1LD22000, 22T, 9sp, BCD: 64mm, 4 Bolt, Deore FC-M590, Inner Chainring, For 22/32/44, Steel, Black

SRAM, X-SYNC Eagle Steel 3mm F1, Chainring, Teeth: 30, Speed: 12, BCD: Direct Mount SRAM 3 Bolt, Bolts: 3, Steel, Black

SRAM, Road Thread Mount E1, Chainring, Teeth: 38, Speed: 12/13, BCD: Thread Mount, Aluminum

Wheels Manufacturing, Chainring spacer kit 18-Compartment Plastic Box