Panaracer Gravelking SK 650B Tire Gravel Royalty The Panaracer Gravelking SK 650B Tire is a go-anywhere gravel tire that is ideal for rough roads, fire roads, and dirt trails. The SK features a small and blocky center tread that is tightly spaced for the best combination of grip and low rolling resistance, for an efficient grip on a wide range of surfaces. This tire is available in a variety of widths and is tubeless compatible so that you can ditch the tubes. The Gravel King SK features a Tuff Tex Casing as well as an anti-puncture layer for optimal flat protection. Panaracer outfitted this tire with their ZSG Natural rubber compound which offers ample grip, making the Gravel King SK an excellent all-around performer on all types of dirt. Features Small block center tread keeps a predictable grip on dirt, with low rolling resistance on pavement(ZSG) Zero Slip Grip rubber compound sticks like glue in corners Tuff Tex casing provides low rolling resistance Anti-flat protection helps keep you rolling SPECIFICATIONSSize650BConditions Hardpack Dirt, Gravel, Rough Pavement Bead Folding TPI-Compound ZSG Gravel Protection Tuff Tex Type Clincher Tubeless Compatible Yes Intended Use Gravel, Adventure Approximate Weight N/A | Panaracer | Gravelking Sk 650B Tire | Black/brown | 650B X 54Mm | Rubber