Rubber EyeCup DK 23 For Nikon F80 F65 F55 F50 F60 F70 FM10 D100 D200 D300 D300S D90 D80 D70S D70 D60 D50 D7000 D3000 D3100 D5000 D5100 This Eyecup for Nikon replaces your lost, damaged or broken eyepiece Nikon DK-23 rubber eyecup improves viewing comfort and prevents stray light from entering the viewfinder and diminishing contrast. Interior Dimensions: 16.2mm x 11.5mm Overall Dimensions: 42.5mm x 27.5mm Color: Black