The Peak Design Nikon F Lens Changing Kit Adapter will help you change lenses faster, and with added versatility. Simply attach the Lens Changing Kit to a backpack, strap, bag or belt. With this kit you can change lenses with one hand, while at the same time, having a convenient place to store the lens you just removed. An added benefit is that by storing the lens outside of your camera bag; space will be freed up for other gear.