“These fittings sometimes real difficult to get the screw thread to grab but once on there is no need to worry any more. There is no rework required stays on and the threat of leaks leaves the mind.”
“I keep finding other bits of hose to put these on. Buy a brass 2 way connector and suddenly more items to be connected. The sky is the limit. So easy to get on the hose, not so easy to get off, but that's the idea, isn't it :) nothing leaks. Very happy.”