The LH-55J is a low center of gravity dual panoramic dual opening spherical ball head. Composed of aluminum alloy, using pure mechanical CNC machining and hard anode softening, paired with PU-70B quick assembly board. Its large main locking knob conforms to ergonomics and is easy to operate. The precision machined 55mm diameter sphere is smooth and silky, with the center of gravity shifted downwards, resulting in a more compact structure.