These bat symbols are meant to be wall mounted. Once mounted just insert your own 3D printed rod or any of your choosing. It will hold your spool up and it will allow it to feed the filament. Best part about it is it can be used for many other things. Need a new stylish toilet paper holder? Bam you got it. Jumping Jellyfish Batman!!! that is a stylish coat hanger you have there. You can print out both pieces together or simply just delete one out. Then once its done go back to the original and delete the other out. Only thing you will need is a few screws and a rod.