Shimano SLX HG81 10-Speed Cassettes feature rider optimized gear progressions.<br /><span></span><ul> <span> <li>Optimized tooth profiles for HG-X chain and Shadow rear derailleur </li> </span><span> <li>Three rings on spider </li> </span></ul><span><strong>Number of Speeds: </strong>10</span><br /><span><strong>Range: </strong>11-36</span><br /><span><strong>Cassette Cogs: </strong>11-36</span><br /><span><strong>Cassette Spacing: </strong>ShimanoMTN 10</span><br /><span><strong>Cassette BodyType: </strong>Shimano 9/10/SRAM</span><br /><span><strong>ChainCompatibility: </strong>Dyna-Sys</span><br /><span><strong>Intended Use: </strong>Mountain</span>