High quality 8-speed cassette. Hyperglide sprockets have a computer designed tooth configuration with contoured shift gates, resulting in a crisp smooth shift even under load. Close ratio gearing allows a more efficient use of energy through finer cadence control. Specification Sprockets are cut away to further reduce weight without reducing rigidity Nickel-plated finish offers hard wearing resistance to corrosion Corrosion-resistant steel cassette lockring For Narrow 8-speed HG chains Weight: 380 g for 11 - 30T Size: 11-28T, 11-30T, 11-32T, 11-34T, 12-25T