"Bought this for a quick little job, went for a solder ring fitting due to space restrictions (compression joint too bulky) and not having to spend a lot of money on a roll of solder, of which I'd use only a tiny bit. I thought the two-pack was very good value and it would have been, had the joint done its job! I did notice that there seemed to be a lot of "play" when I inserted the pipes into the joint, but I applied a little extra flux and hoped for the best. But it was no good - the joint ended up leaking. I tried again with the second elbow in the pack, but with the same result. So I decided to nip out to get some extra solder - that's when I realised just how expensive solder is! I came back without any, and I'm now trying decide what to do next: bite the bullet and pay an extortionate amount for the tiniest bit of solder? Give up on the job? Try to find an alternative solution? Try and hustle a bit off a plumber? I'm no plumber, but I do know a bit about DIY, and I know I won't be buying solder ring joints from ScrewFix again. Hopefully, this is a one-off experience."