This is a booklet for holding playing cards when playing Texas Hold'em poker. It has two sides that you can slide the cards into. They are joined by two m3 screws that can be bought on Bambu lab's website, but any m3x20 screw will work. It also has a cheat sheet on the back of the book in case you forget. Print with no support on the inside of the hinge.
The author marked this model as their own original creation.