The e*thirteen TRS Plus Cassette is the perfect addition to any mountain bike or fat bike. With 12 speeds and a range of 9-50t, this cassette provides smooth and reliable shifting for any terrain. The SRAM XD freehub/driver type ensures compatibility with a range of bikes. Crafted by e*thirteen, a trusted brand in the cycling industry, this cassette is built to last. The black color adds a sleek and stylish look to any bike.