These are the clip that is widely used across the Nissan Range.
It can be found on D22, D40 & NP300 Navara models.
It is used on guard liners, mudflaps, flares and many other places across the vehicle.
It is a Genuine Nissan Item
There are many aftermarket types of these clips, but many of them are too weak and break when removed so they cannot be re-used.