The FPB71 Fluid Pan Base Adapter from Benro is a fluid pan base adapter that adds variable tension and panning abilities to almost any tripod head. Simply place the base between the tripod legs and head for a set that can pan with fluid smoothness and can do so at different resistances. The pan function can also be locked or unlocked quickly by rotating the pan locking knob clockwise or counterclockwise. The rotating collar features a numbered scale for precise and repeatable results. The base features a locking lever, plus a 1/4"-20 socket for attaching accessory arms or other adapters to add microphones, monitors, or more.