The turbo of spike tires bites firmly into icy roads The tungsten carbide core of each spike is clad in weight-saving aluminum Raceguard belting is a synthesis of special india rubber and several layers of nylon fabric offers very effective protection against penetration punctures while minimizing penalties Studded 29x2.25 622 Wire Belted Bk/Bsk 54 1170 67 No 402UPC/EAN/GTIN: 4026495749855