Hadline tubing
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Solved by DevilishBooster,
Hello! I am going to make a watecooled build and i want to know whats the best diameter (inner and outer) for PETG tubing.
Thanks for your time!!
It depends on how you want the system to look. There is no "one size is better than the other". They both have pros and cons. I would say that the most commonly used size would be 13/10mm (3/8" ID 1/2" OD).

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