Race and training tire with grooved side tread for traction Dual layer puncture protection offers superior durability HRC - Hard Rubber Compound, designed as a complement to endurance training tires, it is a quick rolling, long wearing compound that still provides a comfortable ride feel E3 - Iron Cap puncture resistant belt across a 60tpi casing for full tire protection and topped off with an additional layer K-Shield protection Standard 20x1.25 406 Wire Belted Bk/Bsk 80 265 60 HRC/E3 No