Vee Rubber 26x4.8 Snow Shoe XL Studded Fat Bike Tire 121-559 Folding Bead Silica Compound Tightly spaced center knobs for lower rolling resistance and uniformly spaced squared should knobs for added grip on the sides Silica Compound aids in traction in wet and snowy conditions when temperatures drop 240 aluminum carbide studs inserted ISO Diameter: 559 / 26" mtn ISO Width: 121