This listing is for two solid 8 x 2 caster tires. These will fit most pride merits or shoprider powerchairs with 8 x 2 casters. Light gray urethane 2-3/8” 5/16” precision bearings. Solid tires are mounted to split rims using a compression device such as a bench vise or “c” clamp. As well, longer screws with same thread can be used to start rim compression. Solid tires for Pride Mobility are wider than other manufacturers, so when ordering these tires, make certain you have a pride powerchair. Returns are subject to a 20% restocking fee.