Designed to fit most Rubbermaid Big Wheel Carts with spoked wheels 20 Inch Diameter, 2.5 Inch Wide Hub, 5/8 Inch Bearings Axle Shaft, Flat Free Solid Rubber Tires Solid Rubber tires to avoid flat tires and provide a Smooth Rolling cart. 250 pound capacity per wheel, 500 pound total weight capacity Rugged ABS Hub with Hassle Free, Solid Rubber Tires for Quickly Fixing Broken or Damaged Wheels on Your Existing Cart 2 Pack Blackbird Carts 20x2" Pneumatic (air filled) tire & wheel assembly is the perfect replacement for Rubbermaid Big Wheel Carts with 20" tires (Check your existing tire’s sidewall). Quick and Easy Installation: Simply remove the entire old or damaged tire & wheel assembly and replace with this new, no flat tire. Blackbird Carts easy to install replacement comes with a knobby tread tire pre-mounted on heavy duty black ABS plastic rim with 2. 465" centered hub length & 5/8" precision bearings installed to fit standard Rubbermaid axles. Tire repair & replacement made easy make this the practical tire & wheel solution for Rubbermaid carts.