This is a Piggy bank plug that can be easily printed with PLA. Slide it in and move the lock to lock it in position. the hole in the piggy bank must be between 29mm and 32mm. or you must change the design using fusion 360 for example. 01 with supports on buildplate, 02 supports removed, 03 try to get it loose and if you have done that break it loose with screwdriver, 04 top extended, 05 top extended, 06 bottom extended, 07 bottom collapsed