This Vevor mini split line set is designed to connect indoor and outdoor mini split air conditioning or heating pump equipment with durable pure copper tubing and triple-layer insulation. Its 25' length helps support longer installation runs while maintaining flexibility for routing around corners. The set includes 3/8" high-pressure and 5/8" low-pressure pipes for compatibility with 18,000-26,000 BTU mini split systems. Thickened copper construction and insulated wrapping help improve durability, protection, and thermal performance. It also includes wrapping strips and tie wraps for easier installation.