About this 3D model

this is a filament spool holder i made that uses wheel bearing to allow it to roll. you will need two 8mm bearings for this to work correctly. you can get them from most roller skates or skateboards. i made it to where you can use smaller rolls as well. if you find any mistakes or a better way to make it please feel free to remix it. this is the first thing i have designed using tinkercad. thanks