AquaTech Zoom Gear for Nikon 16-35mm F/4 Lens

Description Enable Underwater Lens Zoom Control The AquaTech Zoom Gear for Nikon 16-35mm F4 lens enable users to control the full focal length range of the zoom lenses when combined with Aquatech Delphin or Elite Sport Housings. Durable Construction Made of lightweight but durable Delrin material, the unit operates smoothly and retains its shape and gearing over time. Smooth Zooming and Responsive Control The gearing pitch is calibrated to the zoom control of the sport housing to ensure responsive control during key decisive moments in your underwater and surf photography.