This is the original camera mounting head that we started selling in 2004 and clips on and off of our Windscreen Base Plate.
It positions the bottom of your camera 3.4" above the base plate and can be rotated 360° and tilted ± 100° in any direction. The rotating head is very robust, using a metal "clamshell" with internal grooving to clamp the ball-head tightly and prevent it from slipping.
The large metal T-bar provides a good grip for easy tightening and loosening of both the rotating and tilting functions in a single motion. Uses the standard tripod-style mounting screw with locking ring.