Urban road tires work well on urban, and the tire noise is low, so are the quietest. inner tubes are suitable for Zero 10X / Speedual, if you install it for Zero / Grace 10, the rear wheel is perfect, but when you install the tire and fender on the wheel, there will be a gap between the tire and fender There is a slight friction But I have to inform you that due to the narrow fender or narrow swingarm, although the hub size of the pedal wheel is suitable for the tire, such as for Dualtron 1/2, because there is not enough space for such a wide tire, for Track 1/2 / 3/4, for Inokin 1/2/3, but in fact are not compatible! Tire installation and adjustment require a great deal of hands-on ability The shock absorption capacity of pneumatic tires is significantly better than that of solid tires, but if you don't pump air regularly, the inner tube will be crushed by the outer tire Color: black Material: rubber Package Contents: 4x inner tube Only the above package content, other products are