Sea & Sea 31188 Zoom Gear for Nikon AF-S DX NIKKOR 16-80mm f/2.8-4E ED VR Lens in Port on MDX Housing

Use this Sea & Sea 31188 Zoom Gear to control manual zooming with your Nikon AF-S DX NIKKOR 16-80mm f/2.8-4E ED VR lens in a compatible lens port, which mounts onto an MDX underwater camera housing. Manual focus cannot be used when this zoom gear is in place. The gear mounts onto the zoom ring of the lens and is controlled via the focus/zoom dial/knob on the housing. It is constructed from a corrosion-resistant aluminum alloy.