This adapter aligns the PTFE tube that transports the filament from the AMS to the filament buffer to prevent jamming that leads to filament loading errors such as "the filament could not be inserted into the tool head" (e.g. 0700 8006 142105, 0700 8006 202526) that cause the AMS to repeatedly retract the filament. Also includes a PTFE tube release tool. Hope this helps!
I print from PLA but ASA, ABS, PETG will be fine.