Eyecup equivalent to Nikon DK-23, also known as an eyepiece cup. This is a cost-effective and user-friendly compatible product, not a genuine Nikon part. I have multiple in stock, so please comment with the quantity you need and I will edit the listing. 【Compatible Models】 Fits the following DSLR cameras, among others. Compatibility details follow those of the Nikon DK-23. D300 D300S D600 D750 D7000 D7100 D7200