Compactness and light weight performance are the key to the design and features provided on the new series of benro video headsthe benro s4 video head supports up to a 4 kg video camera built on a magnesium alloy flat base with 38 threaded mount they are ideal for virtually any tripod monopod ball adapter slider or other support rig specially designed to be the perfect companion and part of every benro a2573fs4c2573fs4 video tripod kit or a48fs4 video monopod kit built in bubb