Lossless & Efficient The inside diameter is less than 5 mm, no damage to tires, no air leakage. Simply insert the nail into the tire wound to complete simple and efficient tire repair work. Perfect Sealing Effect It adheres firmly to the tire, has high connection strength, good sealing performance prevents water from entering the wound, so the steel belt will not rust or delamination. Easy To Operate Easy to install with this tire repair nail, you can repair your tire by yourself, do not find the auto repair shop, economical and time-saving.