Available in a variety of gear ranges, from seven to eleven speeds, Dimension cassettes feature Shimano/SRAM compatible spacing and fitment for crisp shifting and install with standard tools to replace worn out cogs. Features: Steel cogs and lock ring 8-Speed Compatible 11-28T Specifications: Cassette Body Type: Traditional Shimano/SRAM 8, 9, 10 Speed Cassette Cogs: 11-12-14-16-18-21-24-28 Drivetrain Speeds: 8 Color: Silver Weight: 244 grams