Use #35 chain. 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. 10.5, Rim Included Yes, Bore Diameter in. 3/4, Tire Type Pneumatic, Tread Type Knobby, Tubeless Tire No, Holes 1, Bearings Included Yes, Hub Width in. 3.5, Load Capacity lbs. 285 at 24 PSI, Rim Size in. 4, Tire Size 10.5 x 410/350 x 4. 10.5in. outer diameter 3.4in.W tire 2.75in.W Rim Bent valve tube. Model Number: 354DB-SP6034. UPC: 098663100885.