Camera Eyecup for Nikon to prevent light entry during long exposure with B shutter or bulb mode. A great accessory for all photographers. Provides protection for Nikon camera eyepiece and helps keep the camera viewfinder free from dust. Soft rubber material for comfort and eye protection. DK19 Eyecup for Nikon, ideal replacement for lost, damaged, or broken eyepiece. Suitable for professional use. Compatible with: Nikon D810, D800, D810A, D800E, D700, D5, D500, D4s, D4, DF, D3s, D3X, D2Xs, D2X, D2H, D2, D3 Series, and other compatible models. Color: Black. Material: Rubber. Package Contents: 2 x Eyecup for Nikon. Note: Light shooting and different displays may cause slight color variation between the item and the image. Measurement may vary by +/- 1-3 cm.