Low profile, tightly packed center knobs paired with well spaced corner knobs make for a fast rolling tire ideal for gravel riding The less aggressive height of knobs make this a great multi use tire suitable for grinding some gravel as well as light trail work DC - Dual Compound tread provides a lower rolling resistance center paired with extra grip for the corners SS - SilkShield offers bead to bead puncture protection covering the tread as well as the sidewalls TR - Tubeless Ready - sealant required Tubeless 700x40 622 TBLS - Fold Belted Bk/Bsk 75 435 60 DC/SS/TR NoUPC/EAN/GTIN: 4717784037974