Cassette Sprocket CS-HG500-10 10-speed ITEM SHIMANO DESCRIPTION NO. CODE NO. Y1RB98010 Lock Ring for 11-25T / 11-32T / 11-34T 1 * Y1WM98010 Lock Ring for 11-42T 2 Y1RB98020 Lock Ring for 12-28T 3 Y1Z81101N Sprocket Wheel 11T (Built in spacer type) for 11-25T Y1RB11200...