The Manfrotto 322RSM cable shutter release kit fits the 322RC2 Grip Action Ball Head and
puts control of your camera's shutter down on the head itself, so you can
take photos the moment you're in position, without having to move your
hand from the head grip up to the camera body. The 322RS can be fitted
to the head no matter which position you choose to use it in, for both
right and left handed photographers.
For cameras with a mechanical cable release socket.