Inner tube is isobutylene isoprene rubber, is better in air tightness, elastic cushioning and aging resistance than natural rubber. NOT recap
Robust inner tube with TR87 folded valve stem, maximum inflation is 30. Inflate with manual pump only
4.10 3.50-4 inch inner tube works with hand carts, trolleys, garden cart, garden cart, lawn cart, utility cart, flat cart, lawn mowers, small tractors, wheelbarrows, garden trailers, trolley carts, wagons, generators, snow blowers and most wheel applications 410 cm 350-4
Suitable for 4.10/3.50-4 inch tyres/wheels: Replacement tubes for 4.10/3.50-4 tyres/wheels (outer diameter 10 inches). Also measured in 4.10 3.50-4, 410 / 350-4, 3.5-4 4, 4.1 / 3.5 4, 4.10 3.50 4, 4.10 3.50-4, 4.10 / 3.50-4, 4.10 / 3.50-4, 4.10 / 3.50-4. inch, 4.1 inch 0x3.50 -4 inches
CUSTOMER SATISFACTION: the installation, check if the inner tubes are completely sealed by immersing them in, if there are bubbles, are already damaged.