Remix of Top mounted spool holder Robo 3d R1 + plus

I love having a top mounted spool holder. I have it on my other printer so I wanted one for my Robo 3D R1 + also. I did not like/couldnt print the wheels that were included in the original Top Mount Spool Holder. I also like to have the least resistance as possible. I use bearings to accomplish this. for under $9, I got these, https://smile.amazon.com/gp/product/B002BBGTK6/ref=oh_aui_detailpage_o05_s00?ie=UTF8&psc=1

Print the bracket as normal. You will need 4 608 bearings. You will need 4 be