1 Size:for 1/8 , 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 ... . Insulated pipe(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 ...