Knurled PC4M10 PTFE Drybox filament pass through
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Knurled PC4-M10 PTFE Drybox filament pass through

This is the version of the drybox feeder insert for using PC4M10 fitting with the M10 x 09 thread ...

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Knurled PC4-M10 PTFE Drybox filament pass through alternatives
PC4M10 Cap
Mordiev