These premium 1/2-inch SAE 45-degree flare tube fittings are designed for reliable connections in air conditioning systems and copper pipe extensions. The set includes 5 pieces of precision-crafted brass flare nuts that provide secure, leak-resistant connections for your copper tubing needs. The 45-degree flare design ensures optimal sealing performance while maintaining proper flow characteristics. These fittings are compatible with standard copper pipes and are ideal for both professional HVAC installations and DIY projects. The durable brass construction offers excellent resistance to corrosion and wear, making these fittings suitable for long-term use in various applications. The flare nuts feature precise threading for smooth installation and maintenance work. Perfect for connecting refrigeration lines, these fittings help maintain the integrity of your air conditioning system while providing dependable performance.