Insulated copper tube piping kits 1. for split air conditioner 2. available in 3M, 4M, 5M, 10M or upon request Insulated copper tube piping kits1. for split air conditioner 2. pure copper, high quality, available in 3M, 4M, 5M, 10M or upon requestSpecification: NO O.D. SIZE 11/4-3/821/4-1/231/4-5/843/8-1/253/8-5/863/8-3/471/2-3/4 Copper tube piping kits