Kirk Quick Release Lens Plate for Nikon 80-200mm f/2.8 D AFI, 500mm f/8.0 Mirror & Tokina 50-135mm f/2.8 ATX 535 lens Kirk Arca Swiss Quick Release Lens Plate - Installation Screws - Kirk 5 Year Warranty Constructed out of 6061 anodized aluminum alloy with scratch resistant black satin finish Compatible with all Arca-Swiss tripod heads