Spaces outside Quality of air: These spaces have Air 4.10 3.50-4 are made of high quality rubber, durable and strong, with good sealing, good elasticity and resilience. and good aging resistance. The air pressure in the chamber The air is stable, the damping effect is good, and it can perfectly replace air chambers. defective air the devil. Wide Application: These spaces with air 4.10 3.50 4 folded valves TR87 are perfect for two-wheeled hand trucks, small garden or yard carts, hand trucks, garden trailers, lawn mowers, more bedrooms 4 inch air. Valve Type: The bent valve tr-87. The bent valve makes inflation easier. Maximum inflation of 30 psi. Inflates with a manual pump only. Bedroom replacement air for 10 inch tires. Tires not included. Note: Please check before installation The tubes of the hand truck are completely sealed by placing them in water. If bubbles form, they are already damaged (Caution: Do not pierce the tire with sharp objects). 4.10/3.50-4 inner tube for hand truck