WTB VelociRaptor Comp XC Steel Bead Bicycle Tire - 26 x 2.1 Cross Country / Trail / Dry to Wet / Hardpack to Mud / DNA / Wire Bead / Durable Casing Steering specific front designed to provide maximum cornering traction. Braking specific rear with wide knobs that dig in while braking in loose terrain. 829g Legendary mountain bike tires,700g Aramid bead, dna rubber, lightweight casing Renowned for its steering control,35-65 psi Quite possibly the most popular tires in the history