The Sigma SGZ 12-24mm f/4 ART Zoom Gear is designed to work with the Sigma 12-24mm f/4 ART Lens.

Each AquaTech lens Port Zoom Gear is designed to work with a dedicated lens. The Zoom Gear will allow full zoom control on the Elite Water Housing and should operate in a smooth and responsive manner. This lightweight Zoom Gear is made from Delrin and will not lose shape over time and with use. The Zoom Gear pitch is matched perfectly to the Zoom Control on the Water Housing to fast responsive control in those critical situations when fast changes are needed.

Size: 42mm (1.65”) X 92mm (3.0”)