Filament Roller Guides

i have my printer in a enclosure and my filament in the Dryers and it wasn't working for me.
so i made these rollers and now running smooths, the Filament dryer are great with a fan inside but the hole needs to be in the back for best operation i drilled many holes to find the best smooth roll out as you can see in the pictures

the Hardware used
Hilitchi 120-Pcs M6 x 25/35 / 45/55 / 65 / 75mm Rivet Phillip Countersunk Head Screws Bolts Dowel Barrel Nuts Assortment Kit for Furniture Hardware Fitting bought on amazon
https://www.amazon.com/gp/product/B07DLSV6DK/ref=ppx_yo_dt_b_asin_title_o07_s00?ie=UTF8&psc=1

i used loc-tight on the treads make sure the wheels spins freely don't over tighten with the glue screw it in then back it out just a little bit.
not need for bearings