Front or rear directional. Fast rollin center knobs with aggressive side knobs for cornering. Lightweight EPS puncture resistance.DC - Dual Compound, two compounds comprised of a harder, longer lasting center and a softer gripping cornerEPS - Exceptional Puncture Safety, offers an added layer of proprietary rubberized poly-fiber material between the tread and the casing to help prevent puncturesUST - Universal Standard Tubeless licensed tire for use with UST designated rim combinations for the best possible tubeless interfaceSC - Single compound, one compound throughout the tread optimized for longevity and performanceStandard26x2.25 559WireBk/Bsk6567827SCNoUPC/EAN/GTIN: 6933882507333