... , 1/4,3/8,1/2,5/8,3/4 inch copper tube outer layer , 2 Wall thickness:8mm to 12mm , 3 Materials:PE foam ... (1) Size:for 1/8 , 1/4,3/8,1/2,5/8,3/4 inch copper tube outer layer(wal thickness: ... 8 mm)(2) Wall thickness:8mm to 12mm.(3) Length ... :4M(4) Material:PE foam(5) Temperature range: -40 ...