Air Conditioning Copper Pipe Extension - 6.35mm and 9.53mm Flare Nut, Joint Double Connector, Intermediate Connection Head, Free Welding, Fits 6.35mm and 9.53mm Diameter Tubes

• 【Premium All-Copper Construction】Crafted with 100% pure copper fittings and corrosion-resistant flare nuts, ensuring superior thermal conductivity, leak-proof performance, and long-term durability even under high-pressure HVAC systems.
• 【Complete No-Weld Installation Kit】Includes 4 heavy-duty flare nuts + 2 pair of double-joint connectors—simply purchase copper tubes (sold separately) for a seamless, welding-free setup. Perfect for DIYers and professionals alike.
• 【Universal 1/4" and 3/8" Dual-Size Compatibility】Designed for 1/4" and 3/8" diameter copper pipes, this coupler bridges or extends AC refrigerant lines effortlessly. Tighten with a standard wrench for instant, vibration-resistant connections.
• 【Tool-Free, Time-Saving Solution】Skip welding and complex tools! The double-joint design allows quick one-to-two pipe splits or extensions, ideal for repairs, retrofits, or custom installations in residential/commercial HVAC systems.
• 【Pro Tip for Fitment】Note: AC lines often use dual-sized tubes. Always measure your existing copper pipes and purchase 2 connector pairs (sold separately) matching both diameters for a secure, leak-free seal.

1/4" and 3/8" Flare Nut Kit