Sea & Sea SS-31121 Zoom Gear for Nikon 18-70mm Lens

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Sea & Sea SS-31121 Zoom Gear for Nikon 18-70mm Lens
This Sea & Sea zoom gear is used with the Nikkor AF-S DX 18-70mm lens. You would use this gear when using the lens in the DX-D70 housing along with the 30103 compact wide port L and the 56201 NX compact macro port base.