About This

• dia. 2 1/4" (57 mm) 12 pcs, and 2 1/4" x 2 1/4" (57 x 57 mm) 12 pcs in a box
• Black vulcanizing gum with blue poly backing
• for chemical vulcanization
• For puncture repair in radial and bias ply tires.
• It can also be used for inner tube