ROLANPRO Lens Hood Telephoto Lens Folding Hood Custom Made for Nikon AF-S 200-500mm f/5.6E ED VR Only for Nikon 200-500 f5.6 – Photo Camera Store
Amazon.com : iShoot Lens Collar for Nikon AF-S NIKKOR 200-500mm f/5.6E ED VR, CNC Machined Lens Tripod Mount Ring Support Bracket Holder, Bottom is ARCA Fit Quick Release Plate for Tripod Ball