Features： 1、High Durability: Made of thick rubber, the inner tube absorbs impact, offers elasticity and aging resistance, with strong puncture resistance and abrasion resistance. 2、Broad Application: Suitable for mowers, hand trucks, ATVs, snow blowers, wheelbarrows, hand trucks, trucks, tractors, generators, air compressors, pressure washers, and more. 3、Stable Performance: This inner tube is compatible with various tire sizes and 6 inch rims (13 inch outer diameter), ensuring strong sealing and air retention, providing excellent guard against rough terrains. 4、Convenient Replacement: Simply replace the inner tube in case of a flat tire, getting back on the road in no time. Save both time and effort with this reliable inner tube for your outdoor activities. 5、Safe Driving: Constructed with rubber, TR87 bent valve stem, and sturdy weld seams, this inner tube offers superior airtightness, tear resistance, making your ride smoother and safer. Specification： Item Type: 3.50/4.00-6 Inner Tube Material: Rubber Inner Tube Stem Type: TR87 Bent Stem Rim Size: 6 inches Application: Lawn mowers, hand trucks, ATVs, Quads, garden utility flatbed carts, wheelbarrows, snow blowers, yard trailers, wagons, hand carts, hand trucks, trucks, tractors, generators, air compressors, pressure washers, etc. Package List： 2 x Inner Tubes