The NIKON F2 SYNC-CAP 30 FB-571 is a round unit designed specifically for Nikon cameras. It is a new replacement part compatible with the NIKON F2 camera model and series. Made in Japan, this sync cap is a genuine Nikon product, ensuring high-quality and reliable performance for your camera. With its specific design and compatibility, this sync cap is an essential component for maintaining optimal functionality in your Nikon F2 camera.