The X1 was designed with the future of gravel tires in mind. It offers the lowest rolling resistance of any Gravelking model and showcases the most aggressive tread design in the Gravelking lineup, providing unmatched performance across various gravel conditions. - Ideal for gravel, dirt, and rough pavement - TuffTex boasts a supple, high thread count casing fortified with precisely engineered bead-to-bead puncture protection - BeadLock is engineered to accommodate a broader range of rims, including both hookless and clincher types. In most instances, mounting the tire can be effortlessly achieved with a standard floor pump - ZSG GRAVEL Compound is crafted from a proprietary ZSG (Zero Slip Grip) material to ensure remarkable resistance to temperature and weather fluctuations. This consistent rubber performance across a spectrum of temperatures provides lower rolling Resistance and improved grip - Folding (Aramid) Bead - Tubeless and Hookless Compatible - Tubeless Ready up to 60 PSI