1. SpecificationHigh quality 9-speed cassette, 11x32 Cogs:11-13-15-17-19-21-24-28-32T,Compatible with Shimano (but SLX,Micro Splin Incompatible ), Compatible with SRAM (but Sram XD,XDR, GX,X01,X11 Incompatible)c 2. MaterialHigh strength steel ,Nickel-plated finish hard wearing resistance to corrosion 3. Detail High precision internal thread ensures close connection with bicycle hub.smooth rotation and easy maintenance.Hollowing technology to further reduce weight without reducing rigidity,make riding lighter.weight:12.31oz Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.