Specification：High quality 9-speed cassette, 11x25 Cogs: 11-13-14-15-17-19-21-23-25T,with Shimano (but SLX,Micro Splin Incompatible ), with SRAM (but Sram XD,XDR, GX,X01,X11 Incompatible). 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:9.7oz.
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