ARES Focus Gear for Switar , Yvar & Pizar lenses, these gears simply slip onto the focus ring of the lens & has a tiedown screw to make the fit snug.
These gears can work on the following lenses
Switar 10mm, 16mm, 25mm & Yvar 75mm Lenses
Pizar 16mm & 25mm lenses
** If your lens focus ring is stiff we recommend having the lens focus ring service so that the focus is smooth and has little resistance which will make the focus gear perform properly **
