Keep your vehicle running efficiently with the 3/4" Repair Union - #12 AC Hose to Aluminum Tube to Aluminum Tube. This automotive A/C tubing repair system is designed to be fast, economical, and provide a durable solution for repairs. The union allows you to quickly and easily fix pinhole leaks, cracks, kinks, and rub throughs in air conditioning, coolant, transmission, oil, or fuel lines – all without welding or soldering! The specially designed system is both airtight and pressure-resistant, giving you total peace of mind that your repairs will hold up over time. As such, it's perfect for both professional mechanics looking to save time on repairs as well as DIY enthusiasts who want a stress-free way of fixing their vehicles. So when it comes to keeping your car running smoothly without breaking the bank – remember that the 3/4" Repair Union - #12 AC Hose to Aluminum Tube has you covered!