TYRE ONLY – rim and inner tube not includedCommonly used on front swivel castors for professional ZTR mowers, the Smooth Tyre has tapered edges to facilitate easy swivel action without turf damage. The Smooth Tyre contains specially formulated rubber compounds for professional grade durability. Benefits also incluse a wide footprint for low tread-to-ground pressue and rounded shoulder for easy turning.  9x3.50-4 Carlstar Smooth