Solid Chassis: The solid chassis design is supported by thick steel plate, which makes driving more stable, more secure. Anti-slip Grip: Aluminum alloy handle is lighter and easier to use, and will not rust forever. Uses silica gel and plastic, which is non-toxic and tasteless, making it safer to use. Block Chain: Chain block design can protect the roulette from rain water. Anti-slip Feet: Designed with a strong step on the feet, the anti-slip is highly polished, and durable. Seals the middle axis: Designed to seal the middle axis, the rotation is flexible and more durable. Solid car frame: The car frame adopts a spring cage to make it sturdy and long life. Comfortable Saddle Seat: Adopts industry leading materials and craft, the flexible and comfortable design fits human body engineering.