Professional Quality the AUTOWN tire repair kits are made of refined high-quality steel and upgraded to comply with exacting standards of audit. This ensures that the kit is of professional quality and can repair even the toughest tires on the market. Durable and Safe: The tire puncture repair set has great adhesion, flexibility, shock absorption, and is not easy to age, providing a long shelf life. It can withstand the toughest repairing and achieve the best tire air tightness.