Will you often be troubled by difficult traffic? If the answer is yes, then you really need a mobility tool to help you solve all your troubles. Below I will introduce you to several commonly used transportation tools.Two-wheeled hoverboard6.5 inch: The smallest wheel size, closest to the ground, easier to drive, solid tire grip, high-quality hoverboard maximum speed can reach 10-15km/h, continue driving for 3-4 hours. Because of its small size, light weight and easy control, it is the best choice for novice players. 8 inch: The time to market is earlier. There are pneumatic tires and solid tires. Because of its high chassis, it can adapt to more complex terrain than 6.5 inches. 8.5 inch: A new type of hoverboard, we named it "Hummer", inspired by the famous m...