Detailed Product Description 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,15m,20m,25m,30m.(4) Color: white(5) Component: Outer PE corrugated hard skin, middle insulation sheet and inner insulation tube .(6)Character: Good heat resistance, low water absorption.(7)Copper thickness compatible any gases: R22 - R407C- R410A -R404A - R507C ...