High-strength composite and stainless steel construction and powder-coated marine-grade aluminum, Include a 1" diameter patented rubber ball and socket system with adjustment points at both ends of the socket arm; this, with a twist of the arm knob, allows you to move the X-Grip® mount to optimum viewing position, Spring-loaded holder expands and contracts for perfect fit of device, Rubber-coated tips will hold device firm and stable, Socket technology allows for multiple adjustment angles and articulation of device, Include all necessary mounting hardware, Made in the USA