Lock Ring for Nikon AF-S Nikkor 600mm f/4E FL ED VR lens.

A lock ring is included with every lens hood order if required by the lens hood.
Lock Ring for Nikon AF-S Nikkor 600mm f/4E FL ED VR lens. Compatible with Zemlin Photo HZ-40 & HZ-43 Series Hoods. Approximate weight: 27g. Order only as a replacement or if using a hood on multiple lenses.  Photo shows an older 600mm lens which takes a similar ring.