COMPATIBLE WITH for XIAOMI M365 INNER TUBE: the type and size of this 8 1/2x 2 air tire inner tube replacement is perfectly compatible with for xiaomi m365 tires. it has 2mm thickness which is twice the thickness of the tire and packed 2pcs in a beautiful package, each tire is 125g. straight value stem scooter replacement inner tubes. SUITABLE FOR VARIETIES OF SCOOTERS: Some brands that have models compatible with this replacement inner tube, like for Razor, Bladez, Gotrax, Crazy Kart, and more. This 8.5 inch x2 inch type inner tube is very suitable for air tire scooters, gas scooters, DIY scooters, bird scooters, mini-bike, and e-bikes. IMPROVED HIGHER QUALITY BUTYL RUBBER: Made of thicker butyl rubber, which is 1mm thickness more than for Xiaomi M365 inner tire. This replacement scooter tire has good resistance to penetration, mineral acids, and aging with high resistance to mineral acids and wear and tear. The butyl rubber ensures incredible resistance to extreme temperatures (-60 Celsius to 180 Celsius). Besides, this replacement inner tube will make you more comfort and safe when you go along an unfelt road. EASY INSTALLATION: It is extremely convenient and simple to install and detach the replacement inner tire, pls make sure the valve of the scooter wheels tires is in the right direction. Colour:black Material:natural rubber Package Contents: 2 * scooter tires