The RM38852XMAMPS Heavy-Duty Metal 4-Hole AMPS drill base mounting pedestal is part of Arkon's Robust Mount Series. Ideal for commercial vehicle use, it features Arkon's metal 8.5 inch 38mm (1.5 inch)-compatible shaft with metal AMPS drill base as well as an AMPS head. It can be drilled into solid, flat surfaces, such as vehicle dashboards or consoles as well as walls, tables, and workbenches. The mount is compatible with devices having a 4-Hole AMPS pattern, including cameras, GPS devices, or satellite radios. The AMPS pattern consists of four holes located in a rectangular pattern spaced at 30.17mm x 38.05mm (measured as the center-to-center distance between holes). This tough mount is also ideal for mobile radio holders, housings, and other devices used by public safety, construction, agriculture, and utility applications. This package includes only the heavy-duty mounting pedestal with metal 4-Hole AMPS drill base and head. This mount (Robust shaft with adapters) measures approximately 10.5 inches high from end to end, and the mount shaft is made of metal. The arm of the pedestal swivels on both the top and the bottom, providing double 360-degree rotation and the ultimate flexibility in positioning the device at any angle.