COMPATIBLE WITH M365 INNER TUBE: This 8.5 x 2 inch inner tube is designed to be compatible with M365 tires. It features a 2mm thickness, which is thicker than standard tubes, and comes packed in a set of 2. Each tube weighs 125g and includes a straight valve stem for easy installation. SUITABLE FOR VARIOUS SCOOTERS: Compatible with a range of scooters including models from Razor, Bladez, Gotrax, Crazy Kart, and others. This 8.5 x 2 inch inner tube fits air tire scooters, gas-powered scooters, DIY scooters, bird scooters, mini-bikes, and e-bikes. IMPROVED HIGH-QUALITY BUTYL RUBBER: Made from durable butyl rubber that offers enhanced resistance to punctures, wear, aging, and mineral acids. The material provides reliable performance in extreme temperatures ranging from -60°C to 180°C. These inner tubes offer improved ride comfort and safety on uneven surfaces. EASY INSTALLATION: Simple and convenient to install and remove. Ensure the valve is properly aligned during installation for optimal fitment. Color: Black Material: Butyl Rubber Package Contents: 2 x Inner Tubes Note: Light and display settings may cause slight color variations between the image and actual product. Measurement may vary by +/- 1-3 cm.