Material: rubber
Applicable models: Nikon F6, D2X, D3X, D3, D700 D800 D800E D810 D4S D4
It is installed on the outside of the eyepiece to prevent stray light from entering, facilitating comfortable and clear viewing.
Corresponding to DK-17(F6, D2X standard configuration), DK-17A, DK-17C anti-drop lock function