The Acratech Ultimate Ballhead is the most efficient design ever created for combining low mass with incredible stopping power.
Absolutely no migration after tightening the clamp
Silky-smooth black anodized finish for precise positioning
Open design facilitates quick maintenance
Calibrated panning bed
"Dry" ball does not attract dirt or dust
Fully captive controls will not come off from prolonged vibrations
New cost of this ball-head is $379.95 For quick response and more information call: show contact info
Check out this link for more information: https://www.bhphotovideo.com/c/product/327811-REG/Acratech_1115_Ultimate_Ballhead_w_Quick.html/overview