I was searching for something to help me remove the 4 PTFE tubes on top of the extruder and all the models that I tried were very hard to operate and sometimes even not working at all.

Came up with the idea to make one that once in place doesn't require force or fingers to hold the release for the PTFE tubes.

Once printed you only need 2 pieces of filament to make the hinge mechanism. On the plate you will find 4 arms in total, 2 are labeled with an S for short and 2 with an L for long, try which arm set release the tubes the best before locking it in place (try the L first, if the tubes still don't release then try the S). 

Push the filaments pieces through the holes like in the following image.

Once done you can melt the ends to secure it in place (it's not mandatory but you can do it with a soldering iron or a lighter).

Seeing that some people are struggling using the tool here you have some videos on how to install, use and remove the tool.

Once assembled slide the tool between the PTFE tubes.

Push it down till it makes contact with the 4 in 1 adapter.

Push the two arms together till they click in place (wiggle them a bit if necessary).

Done! Now you can remove the PTFE tubes without any effort (like pushing/pulling with the others available tools).

Let me know if you find it useful and if you have any suggestion fell free to text it!