DK-20 Rubber EyeCup Eyepiece For NIKON D5100 D3100 D3000 D60 D50 D70 F65 F75 D40 1. The product is suitable for the professional technicians. We are not responsible for any damage during the installation. 2. Please refer to the pictures to make sure this item is the right one you need before purchase. Size:4.5cm x 2.5cm x 0.6cm - 1.77inch x 0.98inch x 0.24inch Compatible with:NIKON: D5100 D3100 D3000 D60 D50 D70 F65 F75 F80 D40 Nikon DK-20 rubber eyecup improves viewing comfort and prevents stray light from entering the viewfinder and diminishing contrast.