Coming soon to a store near you! VANGUARD’s top-of-the-line ABH Series semi-elliptical ball heads automatically adjust and increase tension to handle off-center load, with exceptional strength and stability. Patented features include Combination-Friction Forces Control (CFFC) which enables extreme tension and friction control via an ergonomic grooved dial located on the main adjustment knob. Both are independently adjustable but positioned side-by-side on the same axis for convenient fine-tuning. This combination of precise tension and friction forces control increases the strength to provide outstanding security.