Ordered 20mm hose tail and extension hose for my water butt. They arrived 4 days later. The practical problem was they didn't come with any instructions on how to put it together. I had to ring the company for this advice. It would have been impossible to know without this phone call that we needed also a 25mm flat drill bit for making the hole. With his explanations how the hose tail was in 3 parts, where they went in installation and with the correct drill bit, my son was able to do this job. It would have been good if all this had been as written information in the package.