filament rack Free 3D print model

this is a very simple design, its just made to store some filament easily so you dont have to make a pile of your stuff. it is already scaled to hold basic filament spools. no supports needed, it will easily fit on my ender 3 pro so there is no need to cut and key it. its free because it is just such an easy model to design. please tell me anything about it as this is my first model im selling and i would like some feedback. Thank you! :D