Before you begin installing your mini split line set, assemble the necessary tools and materials. You'll need a refrigerant gauge, welding equipment, copper tubing, flare nuts, insulation tape, electrical wire, and https://www.plumbingsupplyandmore.com/duraguard-mini-split-copper-line-set-1-4-x-3-8-x-1-2-x-50-2003426.html