The new Kirk quick release lens support for Nikon 200-500mm f/5.6E ED VR lens used in conjunction with Kirk's NC-200-500 lens collar. By using the LS-2 lens support, the shift up and down is totally reduced when loosening the lens collar to rotate the lens and stabilizes the front of the lens. The LS-2 must be used with the Kirk's NC-200-500 which is sold separately.