[Furukawa]110 type JFC series waterproofing dummy stopper [blue] /DP-FEJFC-BL [DP-FEJFC-BL]

It is a dummy stopper for the Furukawa Electric (former Mitsubishi SJD) 110 type JFC series waterproofing.
The notation is "one" price.
When there is the point that does not use the terminal in the case of a waterproofing connector, I use a dummy stopper to block up the hole.