This plunger is designed to be a solution to removing the faceplates for the BMO Token Holder. You won't have to look for a pen to swap the faces on BMO anymore.
Use a raft to print the inner plunger part.
Before installing, run the plunger back-and-forth through the sleeve to knock down any of the friction from Z-height tolerance.
Superglue the outer sleeve to the back of the token holder.
The author marked this model as their own original creation.