Gleason 490-328-0008 Arnold 18 in. Riding Mower Inner TubeFeaturesProduct Type: Lawn Mower Inner TubeWheel Diameter: 18 in. Wheel Width: 8 in. Rim Diameter: 18 in. Product Name: Lawnmower TiresSize: 18 x 8 in. Valve Style: Straight valveFeatures of Gleason 490-328-0008 Arnold 18 in. Riding Mower Inner Tube Universal/fits most lawn tractors, wheel b..