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This high quality 10-speed road cassette uses hyperglide sprockets that have a computer designed tooth configuration with contoured shift gates, resulting in a crisp smooth shift even under load. A range of sprocket ratio's are available, allowing for a more efficient use of energy through finer cadence control or a wide spread for tackling steep ascents and descents. Sprockets are cut away and drilled to reduce weight without reducing rigidity. All the sprockets and the steel lockring have a nickel-plated finish which provides a hard wearing resistance to corrosion and the cassette is designed for use with Super Narrow 10-speed HG chains.