Small closely spaced knobs make this an XC go to tire and the ramped knobs keep you rollingFolding bead models feature a higher TPI dual compound casing and EPS puncture protectionSC - Single compound, one compound throughout the tread optimized for longevity and performanceStandard26x2.1559WireBk/Blk6559827SCNoUPC/EAN/GTIN: 6933882513198