Nikon BS1

Nikon BS1
Top of Nikon BS1
File:BS-1bottom.JPG
Bottom of Nikon BS1

The BS-1 is the hotshoe cover that comes with most of the Nikon DSLRs

Purpose

The Nikon BS-1 slides into the hot-shoe to protect it when not in use by an external flash or other accessory that slides into the hot shoe.