Manfrotto 3 Section Double Articulating Arm Nikon F Mount The main feature of the The main feature of the 208HEX is the hexagonal pin which compared to the 208s round one gives more grip when used to hold heavy cameras mounted on photo or video heads in combination with accessories like the super clamp 035 3m 4m and 6m widths Top attachment: 16mm spigot 3 8 light attachment The new bottom attachment adds to the strength and versatility of the 396 with a spigot that combines both a hexagonal part (for anti rotation fixing to the Superclamp system) and a universal adapter section (for fitting to a wide range of stands clamps and accessories)