OTR 4.10/3.50-6 Sawtooth Tread Tire - 4 Ply OTR 4.10/3.50-6 sawtooth tread tire. Tubeless 4 ply construction. Perfect for use in mobility, lawn and garden and various other equipment. Overall Diameter 12.7", Section width 3.7". Max load 440lbs @ 50 PSI. Not for highway service.