This is the kit used to add a pressure readout to the Cafelat Robot. Includes one extra tube. I don't have the nylon shim (small rectangular piece of plastic that you screw the set screws into), but you can probably find something similar around the house or use the cut up piece of business card pictured.
Asking $50 - includes shipping in the US.
Used espresso or coffee stuff you hope to sell or buy.