The top tray has double safety system so as to have double protection for photographic equipment. Specififically design such tripod that have higher trength, stability and convenience for the use of super long lens and heavy photographic equipment used by professional photographers. Heavy duty large load-bearing photographic shooting carbon fiber tripod hunting tripod.HV55 is professional panoramic ball head with damping control which can be converted into a one-way move ball head by locking a knob. It can be converted into a professional photographic ball head when the handle is installed to the ball head. Besides, the damping regulator is added to the ball locking knob and the angle adjustment is more accurate. The single U-shaped notch design can be used for horizontal and vertical shooting. We believe that this ball head will be a good helper for professional photographers.