Manufacturers are putting 50-34t cranks on road bikes a Lot..
Campag took the liberty of making 4 bolts 110 circle, 5th one is not,
thereby having you going back to them for a replacement chainring in the future.
might be time for a new Cassette, then a new chain and yes why not get one with a master /quick link?
the 'Speeds' count is the data for chain selection across the brands ..
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