Drybox Filament Port For PC4M10x10 Fittings
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Drybox Filament Port For PC4-M10x1.0 Fittings

This is just another filament port for a drybox with this one being for PC4M10x10 fittings ...

similar models —

Drybox Filament Port For PC4-M10x1.0 Fittings alternatives
PC4M10 Cap
Mordiev