Swiftech G1/4" 90 Degree Swivel Elbow Lok-Seal Fitting, Black, 4-Pack

These start to grind when rotating after some use. I've had two of them come apart when disassembling a loop - the elbow separated from the rotating piece.

These are excellent, not too bulky and fit almost anywhere you need for a good 90 degree bend.

Leaked all over the place at the middle joint. Not even sure why. Avoid at all costs.

if you need a good right angle fitting, these are what you need.