The latest Generation Follow Focus FF3 of our popular follow focus unit with pivoting adjustment and fixed design and two A/B hard Stops * Gear drive can be mounted from either side (Works for both right-handed and left handed) * The Follow Focus included flexible gearbelt can be used with any zoom or prime lenses with a wide range of lens diamters (any size form 52 to 86mm) * Mounts onto 15 mm Rod Support (60mm center to center difference) * Adjustable locking systems