Sunrace CSM680 8-Speed Cassette 11-40t BlackThe Sunrace CSM680 8-Speed Cassette 11-40t is a great replacement or upgrade to your worn out or damaged 8-speed mountain cassette. Designed to be lightweight and shift super smooth. The teeth are 11,13,15,18,22,28,34,40. Weighs around 456g. Available in Chrome and Black finishes.4710944254747