From Manufacturer
The 502X Fluid Video Head with 75mm Flat Base from Manfrotto is an affordable yet remarkably fully featured professional head designed for executing cinematic moves with compact camcorders, mirrorless, and DSLR cameras. Boasting a payload capacity up to 17.6 lb with spring-loaded counterbalance support up to 9.7 lb, the versatile fluid head also integrates 38"-16 Easy Link anti-rotation functionality.
The bridging technology ensures that the pan friction control is intuitive and easy to set but is also protected against knocks. There are independent locks for pan and tilt, and drag for both is selectable in a continuous range from zero to the maximum level. This allows you to operate the head in a confident, smooth manner using the included pan bar. The 75mm flat base offers a 3/8"-16 attachment that is XCHANGE compatible for mounting versatility on an infinite range of professional support systems, and the included top-load sliding plate makes mounting and dismounting of your camera easy and quick.