COMPATIBLE WITH M365 INNER TUBE: This 8.5 x 2 inch inner tube is designed to fit M365 scooter tires. Constructed with a 2mm thickness, it offers enhanced durability compared to standard tubes. Each package includes 2 inner tubes, each weighing 125g, featuring a straight valve stem for easy inflation. SUITABLE FOR VARIOUS SCOOTERS: Compatible with a range of scooters including models from Razor, Bladez, Gotrax, Crazy Kart, and similar brands. This 8.5 x 2 inch inner tube fits air tire scooters, electric scooters, DIY scooters, mini bikes, e-bikes, and other similar vehicles. IMPROVED HIGH-QUALITY BUTYL RUBBER: Made from thick butyl rubber, this inner tube provides excellent resistance to punctures, wear, and aging. It offers strong performance against mineral acids and maintains integrity under extreme temperatures ranging from -60°C to 180°C. The durable construction enhances ride comfort and safety on uneven surfaces. EASY INSTALLATION: Simple to install and remove. Ensure the valve stem is properly aligned during installation to avoid damage. Color: Black Material: Butyl Rubber Package Contents: 2 x Inner Tubes Note: The actual product color may vary slightly due to lighting and screen display differences. Size measurements may have an allowable tolerance of +/- 1-3 cm.