The RAP-B-200-1-114P-18U consists of a quick release female post spline adapter, 18" rigid aluminum rod and single socket arm for 1" ball bases/adapters. The spline adapter is compatible with all RAM post spline bases, as well as third party spline bases. The 18" rigid aluminum rod can be bent to position your device to its optimum viewing location. The single socket is compatible with all 1" ball bases and adapters.