SIRUI ST-20 Ball Head, Stable Panorama Head for Tripod, Cameras, Professional Low-gravity Arca-Swiss Compatible, with QR Plate, Independent Locks, 35kg/77.16lbs Load

LOW-GRAVITY STABLE BALL HEAD, 35KG PAYLOAD: Expertly engineered with lower gravity and premium aluminum, this ball head is ultra stable, supports cameras weighing up to 35KG/77.16LBS. DUAL PANORAMA PANNING SYSTEM: 360°panorama function can be achived via either the panning base or the panning clamp. The vertical notch enables the ball head to shoot vertically. Allows for smooth and precise 360°panning and 90° vertical movements when shooting in landscape or portrait mode. Advanced Locking System: With independent panning locking knob, ball lock, fricton control knob and base locking knob, photographers can adjust the angle flexibly and preciously. Wide Compatibility: Arca-swiss system is included for easy attachment with camera. Equipped with 1/4"-20 mounting screw on top and 3/8"-16 screw hole at the bottom, ST-20 ball head is connectable with a variety of cameras and photographic stand. Spec for the ST-20 Ball Head | Diameter: 40mm/1.59inch | Height: 90mm/3.54inch | Weight: 0.55kg/1.21lb | Maximum Load: 35kg/77.16lb