15-5-15

Portacatena. Italian for "chain carrier." For a very brief time Campagnolo made a version of their Nuovo Record shifters that had a little thumb lever that allowed you to shift the chain off the freewheel and onto a metal disc that bolted on to the inside of a bike dropout so that the wheel can be quickly swapped out in a race. You'd quickly press in the tab and shift. Done. Somehow, I have a set of these. The tab is bent but not broken and otherwise they are in pretty good shape. Not sure what I'm going to do with them, but there they are.