Insulated Copper Lineset - Flared with Unions - 1/4" x 3/8" (15ft) Air Conditioner/Ductless/Minisplit Insulated Copper Linesets High Quality De-hydrated Copper 2-layer Textured White Insulation Ends flared with Flare Nut Unions 1/4" x 3/8" (15ft)