4x10 Center Fill Round Spun Aluminum Gas Tank - 1/2 Gallon - GO-Kart, Mini Bike, barstool racing, Riding Lawn Mower - Made in the USA! 4x10 Center Fill Spun Aluminum Gas Tank - 1/2 Gallon 1/4 NPT Bottom Center Outlet Vented Gas Cap and Two Stainless Steel Brackets included Our Tanks are 100% American Made! Highest quality TIG welds!