4.10/3.50-4 Inner Tube with TR87 Curved Valve for Hand Truck, 4.10/3.50-4 Inner Tube for Trolley with Folded Valve, Replacement Inner Tubes/Pack of 2

General Description These 4.10 / 3.50-4 inner tubes are made of high-quality rubber, offering durability and strength. They ensure a good seal, excellent elasticity, and resistance to aging. The air pressure is stable, guaranteeing a good cushioning effect, making them ideal for replacing defective inner tubes on hand trucks and other similar equipment. Technical Specifications Size: 4.10 / 3.50-4 Valve Type: TR87 Curved Valve Maximum Inflation: 30 PSI Material: Rubber Color: Black Package Contents: 2 x Inner Tubes (Tires not included) Compatibility and Accessories Suitable for: Two-wheeled hand trucks, small garden carts, hand trucks, garden trailers, lawnmowers, and other 4-inch inner tubes. Installation Before installation, check that the inner tubes are fully sealed by placing them in water. If bubbles appear, this indicates that they are damaged. Be careful not to puncture the tire with sharp objects during installation. These inner tubes are designed for manual inflation only. The curved valve makes inflation easier. Other information: The white powder on the inner tubes is a non-stick coating that protects the tires. This may give them a slightly dirty appearance, but it does not affect their performance.