... :1/4"&3/8" ; WT:0.8mm (2) Insulation tube: WT: 8mm (3) Length:3m,4m,5m,7.5m,10m, ... 15m,20m,25m,30m Features:(1) Copper tube :OD:1/4"&3/8" ; WT:0.8mm(2) Insulation ... tube: WT: 8mm(3) Length:3m,4m,5m,7.5m,10m ... ) Component: Outer PE corrugated hard skin, middle insulation sheet and inner insulation tube .(6)Character: Good heat resistance, low water absorption.(7 ...