Insulated Copper Lineset - Flared with Unions - 1/4" x 3/8" - 50ft (25ft+25ft w/Copper Union) Air Conditioner/Ductless/Minisplit Insulated Copper Linesets - 1/4" x 3/8" - 50ft (25ft + 25ft + Copper Union)-Copper Union Connects 25ft Line-Sets for total of 50ft High Quality De-hydrated Copper 2-layer Textured White Insulation Ends flared with flare nuts