RT 1 Tripod Collar Ring

Enables the AF-S Nikkor 70-200mm f/4G ED VR lens to be rotated freely through 360-degrees when attached to a camera body. Nikon RT-1 Tripod Collar Ring The Nikon RT-1 Tripod Collar Ring enables the AF-S Nikkor 70-200mm f/4G ED VR lens to be rotated freely through 360-degrees when attached to a camera body. The ring helps improve tripod balance and allows quick, smooth switching between vertical and horizontal orientation when shooting in portrait and landscape format.