This mini split line set is designed for connecting mini-split air conditioner or heat pump systems with a 1/4" liquid line and 3/8" suction line configuration. It features 99.9% pure C12200 copper tubing with thick-wall construction for bend resistance and leak-free performance. The 3/8" PE+EVA insulation helps reduce cooling loss and condensation while improving weather resistance. With a 50' length and included weather-resistant strapping tapes, it is built for flexible, professional-looking installations. It is compatible with 0-12,000 BTU mini split systems.