Humminbird MS M Quick Disconnect Mount is designed for your Humminbird and can be used for a second mounting location on the boat. This Humminbird Mount is a practical replacement for a worn original. This unit will work with all widths, 100sx, 200DX, 300TX, 400TX, 700 and 300 series fish finders. This Humminbird Transducer Mount can easily tilt and swivel as needed. Getting this Humminbird MS M Quick Disconnect Mount up and running is simple as well, thanks to the easy installation design.