E Thirteen Crankset - What chainring is compatible ?

grannyjones
grannyjones Posts: 7
edited April 28 in MTB buying advice

Trek Roscoe 9

Crankset: E*thirteen Helix, 30T steel ring, 73 mm spindle length, 52 mm chainline, 170 mm length 


I am looking for the cheapest Steel 30T Chainring that is compatible with this crankset, which chainring do I buy ?