Looking for a tyre that's more tread aggressive and wider than the mixte-tread narrower Gravelking? The GK might just be the tyre you need for the more hardcore roads. Aggressive knobs, natural rubber compound, puncture protection breaker and a special low rolling resistance casing make the Gravelking a go-anywhere tyre. Specification Suited for gravel and off road riding. Natural rubber construction. Integrated puncture protection. Aramid beading for durability. Low rolling resistance casing. Weight: Approx. 380g. Tubeless Compatible.