In order to ensure customer have a better experience with the product, please be sure to read the product instructions. Before repair work, the air pressure must be filled up to observe the breach. Here is the scope of application and product instructions: 1. The diameter of the break is smaller than 5 mm: 2. The inclination of the breach is greater than 45 degrees; 3. If the tread has no tread pattern or the tire is seriously aging, please use other methods to repair it. If the breach exceeds the repairing standard, and there is still air leakage after the repairing is completed, other methods of repairing will not affect the secondary repairing. 4. Please follow the instructions for use. This tire repair nail is only used as a temporary emergency measure. Please go to the store for repair as soon as possible to ensure driving safety. 5. If the sidewall of the tire is damaged, it should not be repaired and the tire should be replaced immediately. How to install the tire repair rubber nail: 1. Find foreign objects such as nails, screws, etc. that pierce the tire: 2. Spray the spray liquid on the pierced surface of the foreign body: under normal circumstances, if there are air bubbles, it indicates that there is air leakage there; 3. Take out the nails or screws with needle-nose pliers or screwdrivers, and use a Phillips screwdriver to probe the inclination angle and piercing path of the wound and confirm that there are no other foreign objects; 4. Use the tip of the tire repair nail to screw in the piercing path with appropriate force until the tail of the tire repair nail is completely immersed in the tire by 1 to 5 mm. (Note: If the puncture hole is at the top of the tire crown, the depth of screwing is basically the same as that of the bead groove). 5: Inflate the tire to the standard air pressure of the tire repair car, and spray it on the tire repair area with a spray. Check whether the tire repair was successful. Product Description Material: steel glue. Function: tire patch. Scope of use: Filling tubeless tires. Colour: Black. Friendly Reminder 1. Vacuum Tyre Repair Nail is only used for the repair of tubeless tires, and the tires with inner tubes is prohibited! 2. Please follow the instructions for use. This tire repair nail is only used as a temporary emergency measure. Please go to the store for repair as soon as possible to ensure driving safety. 3. We measure the product size manually, please allow a certain range of differences, thanks for your understanding. 4. Due to the difference between the screen display or the light, there may be slight color difference between the actual product and the picture. 5. Welcome to contact us if there is any question or advice, we will always be here committed to providing highest standard of customer service for each customer.