The Walthers 933-2804 HO Build-Ups Speeder Shed/Speeder Track & 4-Track Bumpers is a plastic commercial building designed for model railroads and trains in HO scale. This set includes track, making it ideal for transportation-themed layouts. Suitable for ages 17 years and up, this product from Walthers is perfect for adding realistic details to your miniature world, with a focus on speeder sheds and track bumpers for added interest.. Please see my other auctions for more kits, diecast and vintage collectibles.