"Hi-1000ec.com" handles genuine couplers (connectors), terminals, and automotive wires mainly used in Japanese motorcycle and automobile wiring harnesses. We look forward to your orders.
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.