Diamond's K-550 is a reliable mount for our antenna that mounts on the mirror, luggage rack or car rails (The railing can also have an irregular shape, as one side of the clamp consists of a deformable steel band that fits the shape exactly). On the inside there is a rubber band under the steel band to prevent damage to the railing. The clamp is suitable for the usual Diamond antenna cables and can be tilted in two directions. Thus the vehicle antenna is always vertical. It is the ideal choice for light and mid-range antennas and in addition to excellent safety and stability, it features the high quality manufacturing found in all Diamond products.