AutoPot 4mm/13mm filter
A filter with a removable mesh inner for cleaning. This filter has 13mm connections PLUS additional 4mm screw on adaptors that convert the filter to a 4mm filter. You can use this as a 13mm filter, 4mm filter or as a reducing fitting (13mm tubing or grommet filtered down to a 4mm outlet). The 4mm barbs feature the white screw on caps which lock the tubing in place.