MEG CCR ADV Tool

In order to service the Inner Space Systems ADV, you need to remove a threaded Delrin plug that retains the plunger assembly. You can use bent nose pliers or a pin spanner, but if you have a lower profile plunger this may not be practical.

This tool weighs almost nothing and fits the holes in the plug, allowing you to change out the Shrader valve or replace the plunger. I printed in PETG and it worked perfectly.