The new GravelKing SS is a perfect middle ground between the Slick and SK modelsFast rolling file style tread down the center with micro knobs on each side and long rectangular knobs on the shoulders strikes a perfect balance for mixed gravel and road useStandard belting on all GravelKing models helps to prevent punctures and flats while increasing over all durabilityUPC/EAN/GTIN: 4931253023606