Sold: Nikon Nikkor 70-200 F4 with tripod collar - FM Forums
Lens Collar for Nikon 70-200mm f/4G AFS ED VR | Kirk Photo
Tripod Mount Lens Collar for Canon EOS EF 70-200mm f/4L, 300mm f/4L & 400mm f/5.6L Lens – Fotodiox, Inc. USA
Camera West
Tripod Mount Ring / Lens Collar for Canon RF 70-200 F4L IS USM Lens
Amazon.com : iShoot Lens Collar Tripod Mount Ring Compatible with Nikon RT-1 Nikkor AF-S 300mm F/4E PF ED VR & AF-S 70-200mm F/4G ED VR, Bottom Camera Quick Release Plate Compatible with
Amazon.com : iShoot Lens Tripod Mount Ring for Nikon RT-1 Nikkor AF-S 300mm F/4E PF ED VR and 70-200mm F/4G ED VR -with Quick Release Plate : Electronics