Lens Collar Support Tripod Mount Ring for Nikon RT-1 Nikkor AF-S 300mm F/4E PF ED VR and AF-S 70-200mm F/4G ED VR-Bottom Quick Release Plate Feature Compatible with ARCA-SWISS 39mm Fit Ball Head;. Referring to and modified from Nikon original standard design, structure is enhanced, details are improved, and add the function of quick release plate, more practical; Suitable for Nikon AF-S 300mm F/4E PF ED VR and AF-S 70-200mm F / 4G ED VR lenses;.
