Features1[20x4.0 Bike Inner Tube] Specifically designed for 20x4.0 tires, this bike inner tube ensures a fit and optimal performance. 2[Butyl Rubber] Crafted with butyl rubber, this inner tube offers sealing properties, ozone resistance, aging resistance, shock absorption, and electrical insulation. 3[Safe Riding] The butyl rubber inner tube absorbs the impact of uneven roads, providing a comfortable and safe riding experience, even on rugged terrains. 4[Long Lasting With heat resistance, wear and tear resistance, this inner tube can withstand the daily use, ensuring lasting durability and reliability. 5[Versatile Application] Suitable for beach bikes, snowmobiles, and ATV bikes, this inner tube is designed to meet the needs of various outdoor activities.SpecificationItem Type: Bike Inner TubeMaterial: RubberSpecification: 20x4.0Color: BlackPackage List1 x Bike Inner Tube