Medium arm length 3".

• 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
• Made in the USA
• Include all necessary mounting hardware
• Socket technology allows for multiple adjustment angles and articulation of device