For use with Shimano XTR FC-M9100 12 speed double chainsets.
This wave washer can also be used on the following chainsets:
Shimano XTR FC-M9130-1
Shimano XTR FC-M9125-1
Shimano XTR FC-M9120-B2
Shimano XTR FC-M9120-1
Shimano XTR FC-M9100-1
These are an "A" match which indicates that the parts are the same in materials, appearance, finish & size etc.
Genuine Shimano replacement part.