Vee Rubber X-C-X (VRB-323) 29x 1.75" All Black Folding Bead Tire. Vee Rubber X-C-X (VRB-323) 29x 1.75" All Black Folding Bead Tire. Cross Country and Cyclocross use designed for speed ! Long narrow ramped and chiseled knobs in center of tire for optimum traction & help lower rolling resistance and increase speed ! Engineered with Dual Compound Technology ! Staggered smaller ramped knobs for added cornering control ! 120 TPI With Light Weight Folding Aramid Bead ! For medium-hard trail use !