Inner tube for wheel 3.50-8 (size 14") - comes with a valve that can be pumped up with a normal car pump - made from rubber - straight valve Standart inner tube for pneumatic wheelbarrow wheels. Suitable for rim size 8". Perfectly suited for use wheelbarrow, cart wheel, wheel barrel, garden wheel.Not for highway use. This product has a specific smell. 35% natural rubber content. Purchase includes an instruction for replacing