Sizes available for most trainer, sport, scale, or pattern models. A better alternative to the wheels that are included with most kits. Hubs fit 1/8 in. axles but may be drilled out to fit 3/16 in. axles maximum. The tires are made from thick, durable foam mounted on sturdy hubs. The injection molded snap-together hubs securely lock the rubber to prevent run-away tires. The plastic hubs are also very durable and have no threads to jam on your axle. All wheels are available in either a squared-off profile for maximum surface area, or our popular treaded surface for added realism.Dave BrownPart DAV5745