SRAM, X-SYNC 2 107mm, Chainring, Teeth: 40, Speed: 12, BCD: 107, Bolts: 4, Single, Aluminum, Grey

SRAM, X-SYNC 2 Steel 3mm, Chainring, Teeth: 34, Speed: 11/12, BCD: Direct Mount, Single, Steel, Black

Look, Mounting hardware for SRAM E Tap chainrings

SRAM, GX Eagle C1, Chainring, Teeth: 32, Speed: 11/12, BCD: Direct Mount, Aluminum, Grey, 6mm

SRAM, GX Eagle T-Type DM, Chainring, Teeth: 30, Speed: 12, BCD: Direct Mount SRAM 8 Bolt, Aluminum, Grey

Shimano, XT SM-CRM85, Chainring, Teeth: 32, Speed: 12, BCD: Direct Mount, Aluminum/Composite/Steel, Black