The ProMediaGear PLXN3 Lens Foot Replacement works with the Nikkor 70-200m f/2.8 Z mount, Nikkor 100-400mm f/4.5-5.6 Z Mount, 400m f/4.5 Z Mount, and 600mm f6.3 Z Mount lenses. It connects to a strap through the included QD Strap Port. This lens foot is made of T6061 aluminum. It is CNC precision-machined making it fit seamlessly. The material used also means that it is lightweight yet durable for heavy lenses. The PLXN3 is designed to accommodate carabiners and safety hooks so your equipment does not fall in case of accidents. Get yours today. Proudly made in the USA.