Here is a great option for those running ARCA SWISS equipped rifles and gear. This ball head has tensioning knobs for the ball head and the pan feature. A very stable option that with the added versatility of the ARCA SWISS attachment system is a game changer for stability and ease of operations. SLIK rates this at 13.1#s and once again they have engineered a product that they then way under rated.
SLIK PBH-635AS for ARCA SWISS ball head