The Redged B-Series RNB-1 Professional Ball Head is a lightweight professional ball head with adjustable friction control. It features a hydraulic ball head with Teflon lubrication rather than grease, which prevents most problems with dust or dirt interfering with the operation of the head. It has a 360deg. calibrated dial on the base for precise control during panoramic photography. With a 1.10" (28mm) ball diameter, it can support up to 13.22 lb (6 kg).