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 20x1-1/8 451 Wire Bk/Bsk 100 335 60 SRC NoUPC/EAN/GTIN: 047853761528