The built-in mid-level spreader adds anti-torsional rigidity and stops the tripod legs from accidentally being knocked wider apart. Compared to a ground-level spreader or dolly, the mid-level spreader has the advantage that it stays well out of the mud and dirt and is more suitable for use on uneven terrain.
The geared center column allows for safe and precise height adjustments.
The three set screws in the camera platform can be used to permanently secure the head to the tripod, providing additional security.
The twist locks are slightly slower to use than the more common "Quick Action" flip lever leg locks, but give total control over locking force. In addition, they are much easier to service out in the field.