Selden or Kemp Mast - Spinnaker Track Slider Inserts

Replacement slider inserts for the spinnaker track of a Selden or Kemp mast.  The OEM part number of the insert is 530-705.  For reference the slider is 511-505 and fits a 25mm track.

Despite being printed in basic PLA, these are already in their fourth sailing season and are still fine.

A pair of inserts are required - but of course if this is of interest you already knew that!