Zacuto .8 pitch 1'' diameter gear has been discontinued, here are some related products you might like:
The Zacuto 0.8 Pitch 1" Diameter Gear is used with the Z-Focus follow focus unit. This standard-size gear allows for slow and measured lens rotation, resulting in extremely accurate focusing.
The diameter of the gear changes the rotation of the lens. The larger the diameter, the further and faster the lens will rotate.
Note: If you are using a Z-Focus that was purchased before January of 2010, please call for a different style gear. This gear will not work with your Z-Focus.
More information about Zacuto Products (Link to Zacuto Website)