The SmallRig 3598 12mm/15mm Single Rod Clamp is a low-profile rod clamp designed for mounting a follow focus motor to your SmallRig cage.
It is compatible with the SmallRig 3440, 3277, 3278 and 3212 cages and attaches to the front of the cage with a 1/4"" screw.
The clamp is compatible with 15 mm rods and is also suitable for follow-focus systems that use a 12mm rod using the supplied 12mm rod clamp adapter.