CorsairHydro X Series, XF Compression, 4 pieces Pack of1, White Finish, 120 grams, CX-9051006-WW

at first they seamed to be very good but after some time and moving loop order about a few time they do seam to be getting looser and loose, and im sure they will start to leak if i move the loop about a bit more, if yo play on making a loop and leaving it they will be spot on but if you change parts often or add parts i wouldnt use them as like i said they do get loose after a while (taking about the rotating part)

Updated: I spoke to Corsair and there were 2 issues, not resulting from the product.... I was using it wrong.1/ The valve MUST be used with an end cap.2/ I wasn't fully closing the valve. It has to be shut fully 90 degrees (with surprising force needed) to deal.With these things corrected it work just fine. I was wrong....Original review: Brand new fitted to new tubing it leaks slowly. 100% not fit for purpose. Ive asked Corsair to comment but clearly not up to the job of controlling the sealing of a custom loop.Either QC is poor or the part is fundamentally flawed.

Order poorly processed. I ordered 4 pairs of “Corsair Hydro X Series, XF Hardline 90 Degree 12mm OD Fittings Twin Pack (Solid Brass Durability, Quality Finish, Double O-Ring Hardline Compression Design, Easy 12mm Diameter Tubing Fitting), Black “ . The order included 3 pairs of “Corsair Hydro X Series, XF Hardline 90 Degree 12 mm OD Fittings Twin Pack (Solid Brass Durability, Quality Finish, Double O-Ring Hardline Compression Design, Easy 12 mm Diameter Tubing Fitting), Black “ And one pair(fourth pair) of Corsair HYDRO X Series 45° Rotary Bits - Black (Pack of 2) . Something that embarrassed me and delayed the work I had to finish.

Brought for my son to use in his computer to provide a curve rather than a sharp angle and he is pleased with them.

Those who need them know what they are for, good brand and good quality.