20/BOX Radial Tire Repair 1 Ply. Pr-110 Is Designed To Be Used In A Passenger/Light Truck Tire Repair In the Crown Area of the Tire. Industry Repair Limits For the Type of Tire Is 1/4" Within the Tread Belts of the Tire and Should Include the Stem Product For A 1/4" Injury, Pcs-2.