The Hydrostat is the most advanced ball head of the entire Manfrotto range. Designed to meet the demand of professional photographers for a lightweight, but at the same time heavy duty load capacity ball head. This model has similar features to our standard range of ball and socket heads, like independent pan and tilt locks, 360° pan and +90° / -90° tilt movement - but employs a revolutionary friction and locking mechanism. Designed for camera and lens loads of up to 35 lbs (16 kilos), this head has a magnesium die cast body, a 2” Tefl on coated aluminum ball which combined with specially designed tension surfaces provides movement as smooth as silk. A calibrated adjustable tension control allows you to preset the ball tension to suit your camera weight and give you fingertip control. The oversized lock knob hides a “PAT PENDING” locking mechanism which uses the fundamental criteria of the hydraulic laws - specifically referring to the hydrostatic ones, which locks the camera in such a secure position it gives the impression it has become one solid part of the head and removing completely any movement during the locking phase. Completing this masterpiece, a graduated panoramic base and a choice of six different “Hydrostat Ball Head” versions featuring a variety of quick release plate fixings.