A bikepart that’s named melon is always cool. A name that you remember. So what is it?
It is a wide/narrow oval chainring fitting most standards like Cannondale’s Hollowgram by Eliflap:
Or just a regular 4-bolt crank:
Or maybe the only one fitting FSA’s strange 3-bolt:
In a lot of types and sizes, all from Ukraine. More info here: Garbaruk