Premium 8.5*2 thickened inner tube specifically engineered for M365 Pro/Pro2 electric scooters. Heavy-duty natural rubber construction with reinforced seams for 30% greater puncture resistance. Seamless vulcanization technology ensures airtight performance under high-pressure conditions. OEM-grade quality matching original specifications with Amitor"s patented anti-pinch valve design. Optimized for urban commuting and last-mile delivery scenarios. Factory-direct pricing with bulk order discounts available. Compatible with both street and off-road riding conditions. Precision-engineered thickness (1.5mm+) prevents friction-related wear. Includes industrial-grade rustproof brass valve stems. Warehouse-ready packaging for global logistics efficiency.