`- Lightweight wide-range mountain cassette compatible with HG 8-11spd freehub bodies\n- 7075 aluminum 42t and 50t cogs, all other cogs are steel\n- 7 cogs on 2 aluminum spiders, plus aluminum lockring and spacers\n- SRAM derailleurs are generally compatible, Shimano derailleurs require a longer B-tension screw (use WQ-2299)