"Fixed hub/two-piece wheel with tube. Complete pneumatic assembly with ball bearings. 2-piece rim with 3/4in. bore. For speeds up to 20 mph. For use on mini-bikes, go-karts, lawn equipment and hand trucks. Outside Diameter in. 12 1/2, Rim Size in. 6, Tire Type Pneumatic, Tubeless Tire No, Holes 1, Tread Type Knobby, Hub Width in. 2 1/2, Load Capacity lbs. 285 at 24 PSI, Bearings Included Yes, Rim Included Yes, Tire Size 4.10/3.50-6, Bore Diameter in. 3/4. 12.5in. outer diameter 4in.W tire 3.25in.W rim Bent valve tire"