This is a plug that fills the cup pocket of a european style hinge for edge banding so your follower wheels on your top/bottom trimmers don't fall into the hole.
I drill my holes at 13mm deep, the model is 13mm deep. After printing I hit the top and bottom with some sand paper to fine tune the fit.
Insert the key and turn to pull out plugs, should be big enough to pull two plugs without removing the first
The author marked this model as their own original creation.