ZERINT TP-M13W Combination Repair Unit Kit, Tire Repair Patch Plug Kit, 24 piecesZERINT TP M13W Combination Repair Unit Kit, Tire Repair Patch Plug Kit 1 6" x 1 3 8", 1 4" x 1 3 4" and 3 8" x 2 3 8" Wrapped stem 8 pcs Each Wrapped stem 1 6", patch 1 3 8" ( 35 x 4 mm) 8 pcs, Wrapped stem 1 4", patch 1 3 4" (45 x 6mm) 8 pcs and Wrapped stem 3 8" , patch 2 3 8" (60 x 9mm) 8pcs For use in radial and bias ply tires. Designed for chemical or heat vulcanization. Patch and stem have gray vulcanizing gum with blue poly backing. Stem