We have owned our Jura for years, it has suffered 2 international moves, and it has recently started steaming a lot and producing half espresso coffee. With this tool set I opened the oval pan security screws on the rear removed the brew group and noticed that I had a clogged tube. My wife accidentally bought used coffee grounds meant for boiling and I used them, oops! Before buying this toolkit we tried flushing the Jura with vinegar several times, but it didn't improve our problem. Since we really love this machine - we are really happy to let you know that your repair screwdrivers has saved us from throwing it away.