New DK-23 Rubber EyeCup Eyepiece For NIKON D600 D300S D700 D300 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. This is the official part, designed for D300, D300s The Nikon DK-23 Rubber Eyecup is a soft and comfortable eyepiece shield that minimises the amount of stray light that enters the viewfinder, aiding vision when shooting. The Nikon DK-23 is compatible with the Nikon D300/300s. compatible with: NIKON: D600 D300S D700 D300