11 speed wide range cassette Read more.
11 speed wide range cassette7075 Aluminum largest two sprocketsAlloy spiders, spacers and lockringFits Shimano/SRAM freehubCog range: 11/50TCog sizes: 11, 13, 15, 18, 21, 24, 28, 32, 36, 42, 50Weight: 563 g (11/50T)