"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. Tubeless Tire No, Rim Size in. 6, Load Capacity lbs. 285 at 24 PSI, Outside Diameter in. 12 1/2, Tire Type Pneumatic, Tread Type Knobby, Hub Width in. 2 1/2, Holes 1, Bearings Included Yes, Tire Size 4.10/3.50-6, Bore Diameter in. 3/4, Rim Included Yes. 12.5in. outer diameter 4in.W tire 3.25in.W rim Bent valve tire"