The city road tire performs well on urban roads, and it has lower tyre noise, so it's quietest. These tires and inner tubes are fit for Zero 10X/Speedual, if you install it on Zero/Grace 10, the rear wheel is perfect, but there would be a slight friction between the tire and when you install it on the front wheel, it's not a big problem, just a little driving noise. These tires are fit for many other , please check the tires of your scooter, if the inner diameter is 150mm, and the size is 10x 2.5/10x 2, based on my experience, they are universal, such as for OX/ etc. But I have to inform you, due to the narrow fenders or narrow swing arms, there is not enough space to accommodate such a tire, although the size of your scooter's hub is fit for the tire, such as for Dualtron 1/2, Speedway 1/2/3/4, quick 1/2/3, but in fact all of them are incompatible Installation & adjustment of the tire requires high hands-on ability The shock absorption ability of pneumatic tire is solid tire obviously, but if you 't pump in air regularly, the inner tube would be crushed by outer tire, so make the inner tube pump air amply regularly. Model: 80/65-6 Specifications: 10 inch inner and outer tires Colour:Black Material:rubber Size:Outer diameter: 25 cm Inner diameter: 15 cm Width: 8.4 cm Package Contents: 1x 80/65-6 inner and outer tires Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.