Quick Change Spool Hub Alunar Anet A8 ReRap Prusai3 (38mm)

By request here is the smaller quick change hub for the smaller dia filament spools..
Quick Change Spool Hub Alunar Anet A8 ReRap Prusai3 (spool size 38mm).
Alunar A8 3D Printer Quick change filament spool hub RepRap Prusa i3 (38mm spool)
Designed to simplify filament spool setup.
1.Reduce the required number of parts to assemble spool holder.
2.Make a one part spool holder, to reduce required steps involved in the filament spool setup time.
For a larger filament spool hub click the li