Features: Tire replacement accessory, 8.5x3 off-road outer tire and 81/2x2(50-134) inner tire. Made of premium rubber, explosion-proof, pressure and wear resistant, and has long service time. Vacuum explosion-proof inner tube protects you and the scooter in any weather and season. Professional off-road tires, strong grip, very suitable for rugged roads, enhance your riding experience. Easy to install and disassemble, convenient to replace, and adjusted flexibly and fixed tightly. Specifications: Color: Black Material: Rubber Item Size: Outer Tire: 211 * 211 * 69mm/ 8.3 * 8.3 * 2.7in Inner Tire: 200 * 200 * 30mm/ 7.9 * 7.9 * 1.2in Item Weight: Outer Tire: 503g/ 17.7oz Inner Tire: 150g/ 5.3oz Package Size: 220 * 220 * 70mm/ 8.7 * 8.7 * 2.8in Package Weight: 660g/ 23.3oz Packing List: 1 * Outer Tire 1 * Inner Tire