Use this set to enhance your slot car racing tracks. It's perfect for collectors and vintage slot car enthusiasts. The set includes 4 bridge beams and 30 support columns in HO scale. It fits all slot car scales and makes, offering great flexibility. It comes in original 1970’s lithograph packaging, adding a unique touch to your collection. Made in the U.S.A., it ensures high - quality. And if you have any questions, free tech support is available at 1 - 877 - 729 - 2099.