"The RAM Mounts Universal Ball and Socket Electronics Mount delivers the perfect way to keep your medium-size electronics safe and secure. Made from powder-coated, marine-grade aluminum, this RAM Mounts electronics mount combines a double-socket arm mount, 2.5""-dia. round base, 1.5"" rubber ball, and flat, 6.25""L x2""W rectangular plate. The versatile mounting plate offers different combinations of pre-drilled holes to match a variety of electronic devices such as GPS units, fishfinders, and more. Ball-and-socket technology dampens shock and vibration and allows infinite adjustability to find that perfect viewing angle. When you need the industry's most proven, versatile electronics mount, the RAM Mounts Universal Ball with Double Socket Arm Electronics Mount stands tall above all imitators. Mfrs. lifetime limited warranty. Perfect way to keep your electronics safe and secure Made from powder-coated, marine-grade aluminum Features different combinations of pre-drilled holes which will match a variety of electronic devices Ball-and-socket technology dampens shock and vibration Infinite adjustability View the RAM Mounts Kayak and Boat Compatibility Chart."