HEAVY DUTY INNER TUBE - Made of high quality high strength rubber, they provide better sealing and resistance to aging. Durable, these inner tubes are ideal for home, professional, commercial or industrial use. PERFECT FIT - Compatible with 4 inch rims. This inner tube is compatible with various equipment such as wheelbarrows, lawn mowers and tractors, garden carts, utility carts, golf carts, flatbed carts, garden trailers, trolleys, carts, trailers, generators, snow blowers, drill washers, air compressors, grinders wood, etc. PERFECT FIT - Replacement inner tubes for 16/3.5-4 inch tires. Replacement inner tubes compatible with 4/3.5-4 inch tires/wheels (10 inch outer diameter). Also known as 4.10 3.50-4, 410/350-4, 3.5-4 4, 4.1/3.5 4, 4.10 3.50 4, 4.10 3.50-4, 4.10/3.50-4, 4.10/3.5-4", 4.10/3.5-4", 4.10/3.5-4", 4.10/0/3.5-4", 4" x 1.2" 50"-4" Save money: No need to buy a complete new tire. When the old 1.4-1.6 inch tires are flat, simply replace the 4.1"/3.5-4" tube and continue to