I am currently building my own home and I am installing my bath faucets. The plumber I hired only did the rough in which is what I hired him for, now I am doing the rest. My question is he left a stub out of 1/2" copper sticking out of the wall and I was told I could use a compression fitting on that as an option to soldering it on.What I have is a Delta faucet which has a brass fitting that screws down into the faucet and that brass fitting has 1/2" pipe female threads inside.What I have is a fitting that has a compression nut and ferrel for the 1/2" copper on one end and 1/2" male pipe threads on the other. The fitting will be completely outside the wall so it is easily accessible.Thanks , Randy