MGD-303 Tire puncture patch mushroom patch plug gum Combination Repair Unit dipped stem 55*9mm for passenger car Dipped stem 3/8", Patch 2 1/8" 24pcs/box Stem portion: wrapped Stem diameter:3/8"(9MM) Pacth diameter:2 1/8" (55MM) Color:Gray vulcanizing gum with blue poly backing This is a professional wired 9mm puncture repair plug, it can be used on car, motorcycle truck bus and agricultural tyres. Tire repair process with mushrooms nails films auxiliary tool for cleaning wound hole fracture of steel wire. It has high hardness and high wear resistance, which is an indispensable special tool in tire repair.