You can attach the remote head bracket along with the microphone mount that came with TM-D710 or TS-480 to the extension bracket. If you have the TMV71 you will need to purchase the remote kit DFK-3D from a Kenwood dealer. Please note the DFK-3D is not included in this offer. The holes in your metal plate will line up with the holes in the mount. The base can be drilled into solid, flat surfaces, such as walls, tables, and workbenches. 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, and utility applications. This package includes only the Heavy-Duty 4-Hole AMPS Mount with 4-Hole AMPS Head. This tough, low-vibration mount measures 5.25 inches high from end to end and is made of a combination of nylon and fiber. The arm of the mount swivels on both the top and the bottom, providing 360-degree rotation and the ultimate flexibility in positioning the device at any angle.