shimano,CS-HG81,10-Speed CassettesOptimized tooth profiles for HG-X chain and Shadow,rear,derailleurThree rings on spiderItem SpecificationsCassette Body TypeShimano/SRAM 8,9,10 SpeedCassette Cogs11-13-15-17-19-21-23-26-30-34Range11-34Drivetrain Speeds10
