【Abroad Compatibility】480/400-8 Inner tubes replacement for wheel barrows, lawn mowers/tractors, hand trucks, garden/utility/flat carts, yard trailers, dollies, trolleys, wagons, generators, snow blowers, pressure washers, air compressors, wood chippers and more【Butyl Rubber Better Shock Absorption】Butyl adds to more stretch, absorption, impact and puncture resistance for a smoother ride. In addition to good air retention, it is very important for inner tubes to be able to absorb shocks and impacts【Butyl Rubber】High Butyl rubber content with 45% high rubber content which retains air better than typical all rubber inner tubes. Butyl rubber inner tubes can hold air up to 6 months without leaking. Traditional rubber's air permeability means you often need to reinflate your inner tubes as often as every 30-45 days【TR13 Straight Valve】Rubber coated TR13 straight valve stem with enhanced seat seal prevents sand and dust from entering the inner tube and the tire. The tough rubber stem seat is also tear resistant to extend the service life of the valve【Package Includes】2 x Inner tubes, 2x aluminum alloy stem valve caps,1 x valve core wrench, 5 x valve stem cores, 2 x black plastic valve covers Product Description 5 Years Longevity: Butyl rubber inner tubes are more impact and heat-resistant compared to ordinary rubber, meaning they can offer more than double the service life of ordinary rubber inner tubes Size(Please check the size before you order): 4.00-8 Inner Tubes Width: 4 inch Hub Diameter:8 inch Valve Stem Style - TR13 straight stem Package Includes: 2 x 4.00-8 Inner Tubes 2 x Aluminum Valve Covers 1x Valve Core Wrench 5 x Brass Valve Cores 2 x Black plastic valve covers Track Page Views WithAuctiva's Counter