SunRace CSMS8 11 Speed Cassette

All steel cogs 6 cogs on 2 aluminum spiders, plus steel lockring and spacers SRAM MTB derailleurs are generally compatible (check its chain wrap capability), Shimano derailleurs require a longer B-tension screw Fits traditional Shimano style 8,9 and 10 speed mountain bike freehub bodies.  Also fits 11-speed road freehub bodies if you add a spacer.  Does not fit SRAM XD.  Black Finish has an ED coating for extra corrosion resistance Cogs: 11-36: 11-12-13-15-17-19-21-24-28-32-36 11-40: 11-13-15-17-19-21-24-28-32-36-40 11-42: 11-13-15-17-19-21-24-28-32-36-42 11-46: 11-13-15-18-21-24-28-32-36-40-46 Weight: 11-46: 534g 11-42: 465g 11-40: 429g 11-36: 360g