This Nikon PB-5 PS-4 Bellows Focusing Attachment Slide Copying Adapter + BR2 Adapter is perfect for those who want to achieve precise focusing and accurate reproduction of slides. Designed for Nikon F cameras, this bellows attachment is compatible with Nikon lenses and offers a variety of fastening options, including snap-on. Made in Japan, this high-quality bellows attachment is a must-have for any photographer looking to take their slide copying game to the next level.