Spool stopper and 50mm center adapter

So here are spool stopper to prevent large diameter spools falling of the holder and 50mm center adapter for 50mm centered spools to run smooth on the holder (when they sit on the holder without centers, extruder can have hard times unwinding it, especially when there is some friction between the spool and the holder).

You need 2 of both, you can adjust thickness per your needs for custom fit.

Those snap on really nice.

I used both ABS (centers and stoppers) and SBS (stoppers), all work