The 509HD video head features an exclusive Manfrotto patent, Bridging Technology, which allows for greater load capacity as well as revolutionary performance levels. The "bridge" design also assists the PAN friction control to be more intuitive and easy to set while protecting against any knocks that may occur during the recording process. The 509HD's FDS (Fluid Drag System) is variable and directly controls action and resistance on both axes; the ergonomics of the controls have been noticeably improved to make use of the FDS even easier. Another unique feature is the ABR (Advanced Balance Recorder). This new patented electronic solution permits the head to record the perfect balance position of the equipment and recall it any time. By using LED lights controlled by a proximity sensor, it is easy to quickly slide the camera to the previously set perfect balance. New quick links are machined Aluminum machined inserts that allow strong attachment of accessories to the head. The pan bar telescopes for quick and perfect adjustment and has a textured handle for comfort. All of this guarantees ultimate control and excellent video camera support. no matter what the situation, the shooting style, or the equipment set-up. Technical Specifications: Maximum load capacity 28.6lbs; Weight 11 lbs; Length 10.8", Width 7.3", Height 15.7".