The Gitzo Ball Head Series 4 GH4383QD (screw version) is a heavy-duty tripod head ideal for large telephoto lenses, engineered to ensure the ultimate in smoothness and precision of movement. Though weighing-in at less than 1kg, it securely holds an impressive 30kg load – effortlessly handling a CSC or DSLR equipped with a 400-600mm lens. The unit perfectly complements Gitzo’s Series 3, 4 and 5 Systematic tripods and is available in both lever and screw plate lock configurations.The Ball Head Series 4 has a larger super-smooth coated hollow-sphere ballensuring confident and comfortable use with heavier equipment, even in extreme conditions and temperatures from -30° to 70°C.