The Panaracer GravelKing SK+ features tread knobs specifically developed for maximum performance on gravel and gravel surfaces, offering a perfect balance between traction and rolling resistance. The ZSG Gravel rubber compound and TuffTex+ casing make the GravelKing SK+ an incredibly robust yet lightweight tire, ideal for long rides on any terrain. The GravelKing SK+ is equipped with the latest Panaracer technologies, including the Zero Slip Grip Gravel compound, the robust TuffTex+ casing, and BeadLock technology. The rubber compound boasts a formulation of specific materials for gravel, starting with Panaracer's patented ZSG (Zero Slip Grip) material. ZSG ensures excellent resistance to temperature and weather conditions and offers low rolling resistance and consistent grip across a wide range of temperatures, from near-freezing to scorching heat. TuffTex+ is a revolutionary structure developed exclusively for GravelKing tires. A supple casing with excellent puncture protection. The Plus version features two layers of TuffTex for even greater protection, even in harsh conditions. This unique compound ensures an exceptionally smooth ride and offers the lowest possible rolling resistance on a GravelKing tire. BeadLock: The tire bead fits various rims (including hookless ones) and in most cases can be mounted with a standard floor pump. Panaracer Gravelking tires are manufactured in Japan by experienced technicians using the most advanced materials. This guarantees exceptional production quality and performance. Note: For installation, Tubeless Ready tires require compatible Tubeless rims/wheels, Tubeless valves, Tubeless rim tape, and sealant. Puncture sealant is not necessary for UST Tubeless tires but is recommended for increased puncture protection. Installing Tubeless tires is not always easy and should only be performed by qualified personnel.