The Sunlite Cassette 11-23 7sp 180030 is a durable and reliable bicycle component designed for various bike types such as road bikes, folding bikes, universal bikes, mountain bikes, and flat bikes. Made of steel with, this cassette features a range of 11 to 23 teeth for optimal gear ratio and performance. With a sleek design and a lightweight construction, this cassette is a valuable addition to any cyclist's bike for improved efficiency and agility on the road or trails.