Product review (2 stars): Don't do it.
Finally got around to putting them on, (after the return date, no less) and one of them leaked at the compression fitting, on the stem, not the swivel. So, 50% of it worked. The ones I took off had a 90 degree angle on one end, to make it easier to connect, but NOT THESE. Spend a couple extra bucks and buy the really good ones.