Check the listing for details. KMC REACT Cassette - 10-Speed, 11-36t, HG Driver Compatible, Black. Color: Black, Condition: New. Listed at 41.95 USD. NEW KMC REACT Cassette - 10-Speed, 11-36t, HG Driver Compatible, Black With the REACT series, KMC has filled a gap in its lineup of drive solutions. Just like KMC chainrings and sprockets, REACT cassettes are precisely designed to match KMC chains. This perfect synergy reduces friction between individual components and enhances the lifespan of all drive components. Meticulously crafted ascent and descent ramps ensure precise chain guidance, improving shifting performance across the entire range. Made from high-strength steel, REACT cassettes are compatible with Shimano HG Lifting and lowering ramps provide improved shifting performance, overall component interaction efficiency and stabilityUnique lifting ramps design carries the chain smoothly upward on the cogsDistinctive lowering ramps adeptly align the chain quicklyCogs sizes are design to provide smoother shifting and precise chain indexing to suit all ridersOptimized for use with KMC e10, X10, X10 EL, and X10 SL chains