Senville 25' Insulated Copper Pipes for Air Conditioning - 3/8" & 1/4" 25 Ft. Insulated High Quality Copper Tubing 1/4" & 3/8" OD for Mini Split Air Conditioners Insulated with Climate Resistant Foam for Durability Compatible with Most Mini Split Air Conditioners Requiring 1/4" 3/8" Fittings Flared Fittings for Simple and Easy Install