... : 8mm (3) Length:3m,4m,5m,7.5m,10m,15m,20m,25m,30m Features:(1) Copper tube :OD:1/4"&3 ... : 8mm(3) Length:3m,4m,5m,7.5m,10m,15m,20m,25m,30m.(4) Color: white(5) Component: Outer PE corrugated ... - R407C- R410A -R404A - R507C etc. Pair insulated copper tube (YZ-23-1911)