Guys I need advice for Clear, Soft Tubes 13/10mm (3/8" 1/2") normal.
 
I order EK Dura Clear but that's such junk and I saw that later that people complain.
It's good because I tried before I installed everything. I barely install peace of 15cm tubes on fitting in hand.
I laughed when guy with arround 10-15 years experience with such confidence tried to show me and couldn't installed at all.
 
Second problem is because we couldn't remove peace of tube from fitting, tube deformed but stayed on fitting.
I give you warranty you could pull whole socket out of motherboard easier that tube from fitting, when we pull tube become so thin from our pulling and we couldn't remove, I cut with scalpel diagonal and on that way remove peace of tube from fitting, can you imagine.
 
Later I found on overclockers.uk people complain and people who found that S/L/P kits from EKWB and EK Dura Clear 3m tubing are not same. 
Now I need to find something other in Europe. I only could estimate... masterkler, Tygon, Mayhem...
I see Mayhem 13/10mm is out of stock, probably because everyone want them.
If they are perfect I can search for them.
 
Something you installed easy.
It's much easier to leak if tubes install so hard. Tube should go without so much pressure and second part of fitting have task to press them more and prevent leaking. Not inner diametar so much smaller than fitting body. They couldn't enter on thinnest part of fitting, and fitting is wider later... Inner diamet is smaller and a lot of smaller than thinnest part of fitting on top.
Not you barely capable to install fitting because tubes on fitting is 2mm wider than body of tube and deformed with pressure.
Avoid EK DuraClear 13.10mm 3m, that's only option for 13/10 soft tubes and fault batch and they sell like that to people who have problem with plasticer, tubes are not clear immediately or after one week in loop, not possible to install properly, etc...