Originally Posted by onespeedbiker

I know we've had this conversation before, but I will try one more time. The below is the graph you were referring to, which is taken from the above graph. There is nothing in the below graph that matches a colored insert with a particular freewheel. The inserts are matched to the derailleur and the graph shows which freewheels will work with the insert, not which insert will work with with which freewheel. Below is shows the 7 speed Athena/Xenon derailleur requires a blue insert and will work with a Campagnolo approved 90-s 7 speed freewheel and the others listed abve. The 7 speed Chorus derailleur requires a green insert and will work with a Shimano SIS 7-speed freewheel/cassette and others listed above. The above graph also shows which chains work best with which freewheels.