The AquaTech NEP-1 Eye Piece for Nikon is required to help secure the AquaTech Sport Shield to your camera. Made from a lightweight and strong plastic, the foam end has a similar feel to the camera"s stock eyepiece. Supports the following cameras: Nikon D700 Nikon D3x Nikon D3s Nikon D3 Nikon D2x Nikon D2H