This kit includes:(2) Azusa 8" Spinner Wheels with 5/8" ID hi-speed bearings(2) 4.80/4.00x8 Inner Tubes(2) 4.80/4.00x8 Studded Tires(1) 72 Tooth, 35 chain Rear Sprocket The rear wheel and sprocket/drum in this kit require drilling the holes to mount the...