About this 3D model

I have slightly modified the great design of the Bearing spool holder from chylld www.thingiverse.com/thing:7001. I fits reels from www.watterott.com and www.reprapsource.com which seems to come from orbi-tech.de. The bearing holders are designed to fit a 608 bearing and they are placed into the spool centre holes, with lips to stop them from going all the way through.