If all you really need is a solid gear to use your lenses with a follow focus, this seamless Easy Focus Adjustable Ring gear is a cost-effective and near-native solution.
Adjustable, Rigid, Seamless, Wide, and best of all each this gear was tailor-made for Lens Sizes 52mm - 86mm. Fit most cameras and camcorders.
Lightweight but very sturdy.
Gear outer ring and inner threaded, easy for control.
Made of Rubber and Aluminum Alloy.