It is a bit of a pain to decide in my opinion since the inflow and outflow tubes are different sizes...
I have the metal pipes and really really like them, although the inflow is a bit too tall it works fine. The thing I like about these is the metal, they won't break and don't look dirty really.
They are 13mm.
-Andrew
I have the metal pipes and really really like them, although the inflow is a bit too tall it works fine. The thing I like about these is the metal, they won't break and don't look dirty really.
They are 13mm.
-Andrew