【High Quality Material】 Inner tube made of higher quality butyl rubber. 【Excellent Performance 】 Butyl's high airtightness can form an airtight seal, butyl inner tube tear resistance and heat resistance, excellent resistance to adverse environmental 【 Thickened & Durable 】 This thickened design butyl rubber inner tube is durable,resistance and heat resistance, excellent resistance to adverse environmental 【Compatible】 Inner tube specially suit for 8.5-inch electric scooters,compatible with Xiaomi M365 /M365 Pro/Pro 2/1S,Gotrax GXL/V2/XR ,and other 8.5-inch electric scooters.