Smooth rounded tread with large water dispersion grooves provide greater straight-line speed, traction and cornering confidence Excellent commuter or recumbent tire SRC - Standard Rubber Compound, combines the best attributes of low rolling resistance, extreme durability and tread longevity Standard 700x40 622 Wire Bk/Bsk 85 30 SRC NoUPC/EAN/GTIN: 478536431832