7 1/2 x 10 Inch 3PLY USA Style COI Radial AGR 82 Bowes TR 22882 Box of 57 1 2 x 10 Inch 3PLY USA Style COI Radial AGR 82 Bowes TR 22882 Box of 5. This style is black with gray vulcanizing gum on a blue poly backing. Each reinforcing ply is individually end wrapped to deflect tire flexing stresses in a unique manner. The tie gum construction eliminates the potential for delamination common in other brands. The face stock used will vulcanize chemically, in low temperature systems when applied with our vulcanizing cement.