Lock Ring for Nikon AF-S Nikkor 180-400mm f/4E TC1.4 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 180-400mm f/4E TC1.4 FL ED VR lens. Compatible with Zemlin Photo HZ-41 Series Hoods. Approximate weight: 19g. Order only as a replacement or if using a hood on multiple lenses.