Collet clips (fitting fixer) for Chinese extruders

My printer has a problem that the bowden PTFE tube is not tightly clamped by the fitting and is constantly shifting. Because of this, sometimes there is a stopper in the throat. To solve this problem I typed this item based on original design by ikarisan. The upload includes the STL and Solidworks 2018 files so that you can change the thickness or shape to fit your fitting.