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. Tire Type: Pneumatic, Tire Size: 12.5 x 410/350 x 6, Load Capacity (lbs.): 320, Rim Size (in.): 6, Rim Included: Yes, Holes: 1, Bore Diameter (in.): 3/4, Bearings Included: Yes, Hub Width (in.): 3, Tubeless Tire: No, Tread Type: Knobby O.D.: 12.5in.