National Geographic NGEH2 Expedition Hydrostatic Head RC5

The NGEH2 head is simply the most advanced ball head in the world, incorporating the innovative hydrostatic locking system to produce an absolute rock-solid lock with the small turn of a knob. Using hydraulics instead of a mechanical approach produces a super-tight lock with minimal amounts of knob turning. The effect produced is a smooth moving ball, but when locked, essentially becomes a solid part with the head. This revolutionary head uses the latest materials for silky smooth operation and its magnesium shell produces feather light weight.