About this 3D model

Remix of my 30mm spool bearing, now in 38mm! It seems every spool of filament comes in a different sized spool, so I just keep changing the design to fit. Inner diameter fits an M8 rod, outer diameter fits a 38mm hole. Added flange for security. UPDATE: Hah, sorry I only uploaded Solidworks parts, heres the STL's UPDATE: New top, the old one was faulty