Marathon's 20x2" Flat Free tire & wheel assembly is the perfect replacement for Rubbermaid big wheel carts with 20" tires (Check your existing tires sidewall). You don't need to change out an old tube or visit a professional tire shop, simply replace the entire old or damaged tire & wheel assembly with this one. Marathon's easy to install replacement comes with a flat free knobby tread tire pre-mounted on heavy duty black plastic rim with 2.465" centered hub length & 3/4" precision bearings installed & 5/8" precision ball bearings to fit alternative axle sizes. Tire repair & replacement made easy make this the practical tire & wheel solution for Rubbermaid carts.