Note: 1. Confirm that the specifications are consistent with the inner tube. Each inner tube is equipped with a valve, nut and rubber cap that can withstand the load. When installing the inner tube into the outer tire, please carefully check 2. When the inner and outer tires are installed on the rim, please check the rim in detail first to ensure that there are no adverse factors on the rim, no deformation, no debris 3. Please use a wrench to tighten the nut, do not use some incisive tools. When the tire is used for high speed driving, it is recommended to use RIMLOCK for added safety 4. When the inner and outer tires have been installed on the steel ring, please be careful, and do it properly, the valve is correctly locked on the steel ring, the steel ring is exposed for inflation and the inner tube is not clamped between the outer tire and the steel ring 5. The inner and outer tires have been installed on the rim, inflate the inner tube with 10PSI, then stop inflating, and check whether the inner and outer tires are properly locked on the rim, and then you can press the air pressure recommended by the manufacturer (marked on the bead of the outer tire) inflating, the rim line on the tire must be visible outside the steel ring 6. Do not pump too much or too little, this will cause the valve and the inner tube to fall off and cause an accident, please check whether the air pressure is at a normal level, check the valve to prevent air leakage. It is strictly forbidden to store with flammable and corrosive items, heat sources Package List: 1 x Electric Vehicle Inner Tube