Set of 2 inner tubes 4.104 for hand truck and trolley. Isobutylene isoprene rubber. TR87 curved valve. 30° inflation rate.

General Description: The replacement inner tube is made of isobutylene isoprene rubber, offering better sealing, cushioning, and increased resistance to aging compared to natural rubber. It is robust and equipped with a TR87 curved valve, with a maximum inflation rate of 30°. Technical Specifications: Dimensions: 4.10/3.50-4 inches (10-inch outside diameter) Material: Isobutylene isoprene rubber Valve Type: TR87 curved valve Maximum Inflation Rate: 30° Compatibility and Accessories: Compatible with: hand trucks, wheelbarrows, garden carts, riding mowers, small tractors, garden trailers, flatbed trucks, generators, snow blowers, and other applications with 410/350-4-inch wheels. Installation: To check the integrity of the inner tubes, immerse them in water. If bubbles appear, this indicates that they are damaged.