"This fully featured end feed capillary fitting will connect pipes for you all day long. Fully reversible with a thoughtful stop to ensure both pipes are equally fitted. The shiny copper finish gives a clue to this fittings real pedigree, solid copper! Not a bit of plastic insight. I ran a vernier over. this little beauty and it's parallel all the way and fully round. Just heat pipes & fitting, clean add flux and solder for a life long joint. So far I can confirm all is well and over two weeks since fitted, can't knock that!! All in all a truly topping little product."