Premium 8.5x2 inner tube specifically engineered for M365 series & Mi Electric Scooters. Thicker vulcanized rubber construction resists punctures and extends lifespan. Precision molded valve stem ensures airtight seal with OEM wheels. Reinforced sidewalls prevent pinch flats during high-speed urban commutes. Warehouse-stocked for immediate EU shipping. Bulk pricing available for fleet operators and repair shops. Direct factory supply guarantees 35% lower cost than retail channels. Fits Pro/Pro2/S1/Mi3 models with exact diameter matching OEM specifications.