【Adjustable Mounting Angle】Nitze MF15C mini follow focus can be installed to your desired angle by using the adjustment knob. 【A/B Hard Stops】The follow focus system supports to preset A/B hard stops focal length or use 360° infinity zoom. Built-in threaded holes allow you to put A/B hard stops screws inside when not in use to prevent loss. 【Reversible Drive Gears】The follow focus kit contains 1 x 0.8 Mod/38 Teeth, 1 x 0.8 Mod/43 Teeth, 1 x 0.8 Mod/65 Teeth drive gears. And the drive gear is reversible. It can be mounted on the front or back side of the follow focus to meet different focusing needs. 【Dual Marking Disks】The follow focus comes with two marking disks for interchangeble. Snap on magnetic marking disk can be easily attached or detached. 【15mm Rod & Rod Clamp】The single rod follow focus includes a 15mm aluminum alloy rod and a 15mm rod clamp. The 15mm rod clamp with NATO rail locks with two 1/4” screws.