TURBRO Mini Split Copper Line Set, 1/4" x 3/8" Insulated Copper Tubing TURBRO insulated copper line set designed for mini-split air conditioning and heat pump systems. Features durable copper tubing with thick PE insulation and factory-flared leak-resistant connections for easy installation. Features:• 1/4" liquid line and 3/8" suction line• Pre-insulated copper tubing• Factory-flared ends for quick installation• Thick PE insulation for energy efficiency• Compatible with many mini-split AC and heat pump systems• Durable corrosion-resistant copper construction Included:Copper line set and accessories shown in photos. Local pickup available in Corona, CA.