Consists of a double socket arm, 2.5-diameter round base with a universal AMPS hole pattern and an adapter base that inserts directly to the back of Lowrance Elite 5 and Mark-5 fish finders. The adapter serves as a quick-release mechanism, allowing you to remove or mount your sonar in seconds. The 1.5-diameter rubber ball-and-socket system has adjustment points at both ends that work with RAMs rubber ball and socket technology to allow almost infinite adjustment for perfect viewing and operation angles. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Mounts and Bases.