Amazon.com : Funn Solo Narrow Wide Chainring for 9 10 11 12 Speed Chain, Fits Asymmetric 96mm BCD Interface Crankset, Single Speed Bike Chain Ring for MTB, BMX Bike, Gravel Bike and
Chainring 1-speed direct mount narrow-wide Round for Shimano DM 12sp MTB Boost ELM 3 mm offset
Kotyreds 40T/42T Round MTB Bike Narrow Wide Chainring Sprocket Single Speed Crank Chain - Walmart.com