- Semi-spidered construction with durable, blast/heat-treated steel cogs and weight reduction ports throughout the range (three largest cogs fixed to spider) - PowerGlide tooth profiling designed for smooth/fast shifting performance (36t max for mountain derailleurs, 32t max for road medium cage, 28t max for road short cage) - Fits 8/9/10sp SRAM/Shimano-spline freehub bodies for 10sp shifting/spacing - Includes black steel lockring
