Goes on the end of the shaft to prevent the the end from collapsing down while tightening the hub, OD of reinforcnemnt is 15.9mm, to fit most euro 20mm OD shafts.
Goes on the end of the shaft to prevent the the end from collapsing down while tightening the hub, OD of reinforcnemnt is 15.9mm, to fit most euro 20mm OD shafts.