Introducing the SRAM XX1 XG-1199 X-Glide 11-Speed MTB Cassette 10-42 for XD Driver. This high-quality cassette is compatible with SRAM products and features a 42 tooth largest sprocket and a 10 tooth smallest sprocket. The cassette is perfect for mountain bikes and comes with three items in the package. The silver color adds a touch of style to your bike. This product is new in the box and ready for installation.