The SIRUI K-30X Ball Head is precise, meticulously machined and perfect for professional photographers and enthusiasts alike for its world-class quality based on years" of accumulated experience of SIRUI and its innovative design. The K-X series ball head is applied with the best aerial material, machined by high-end CNC and coated with anodic oxidation on its exterior to achieve its superior quality. The interior locking system has a sphere tolerance of 0.01 mm and is equipped with orientation-memory locking dial; this quick-locking mechanism allows for easy access and use.The 360-degree panel is integrated in the base which allows photographers to do panoramic or continuous shooting. The quick-release plate platform, adopting general sizes of international standards, is of the Arca-Swiss type, thus suitable for a variety of quick-release plates. Two bubble levels are included on the platform that serve as a measure of vertical and horizontal balance. A red safety button is also incorporated to prevent the quick-release plate from sliding off the platform easily; the plate can be released by pressing on the button.The three knobs of adjustment (from the base and up, respectively) are the panoramic control knob (smallest), friction control and ball-locking knob (the biggest) and the plate-locking knob at the top. The K-30X Ball Head can support up to 30 kg (66.1 lbs) and is suitable for 35 mm and medium- and large-format photographic cameras, DSLRs and digital