Cassette HG50 8 gear
12-23: 12-13-14-15-17-19-21 and 23
12-25: 12-13-15-17-19-21-23 and 25
13-26: 13-14-15-17-19-21-23 and 26
The cassette is placed over your rear hub and secured with a locking ring at the end which is tightened with a key (puller) which has 12 pins.
The locking ring comes with this item!
Guide to changing the cassette