* ZSG GRAVEL compound Featuring a specialized gravel specific compound crafted from our proprietary ZSG (Zero Slip Grip) material. ZSG ensures remarkable resistance to temperature and weather fluctuations, ensuring consistent rubber performance across a spectrum from near freezing to scorching temperatures. performs lower Rolling Resistance and Grip for both Gravel and Tarmac.* TuffTex R TuffTex R’s bead to bead protection represents our most supple and lightweight casing to date. This distinctive combination guarantees an exceptionally smooth ride, providing the lowest rolling resistance available in a Gravelking tire.* BeadLock our redesigned bead 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.