you will often need to know the chainline to determine the type of chainring offset you need. Chainline measurement was more complex when there were triple and double front chainrings. However ...

Made to fit Shimano direct-mount cranksets, the new Tumbleweed Wagon Wheel Chainring fills the specific need for replaceable chainrings for Shimano Hollowtech 2 cranks. The new 32t, +3mm offset ...