Putting it together is no rocket science. Youll need to wrap the male threads with the plumbers tape at least a couple of times to make it watertight. Use spanners to grip the adapters and the gauge inlet because the cheap gauges are made of plastic and if you try to tighten the connection using the gauge face, youll break it. The only downside of this setup is the gauge is upside down and for some machines, you might not have a lot of space underneath the brew head which means you might need to get 90 degree type adapters. Mine was ok if I removed the drip tray.