The benro b4pu70 magnesium ball head features separate manual drag and lock controls a standard universal quick release camera mounting plate system together with an independent smooth panning control and positive locking the b4pu70 head provides quick smooth and easy 360 degree operation with total precision and will hold up to a massive 40kg in weight the b4pu70 quick release plate with screw is the perfect match for benros series 3 and 4 tripods