The RAM "E" size ball mounts are big, strong, and ready to take a punch. Utilizing the rubber ball and socket design from RAM and a large 3 3/8 inch diameter ball, shock and vibration have met their match. Large electronic devices, up to 25 pounds, can be supported in punishing conditions and environments. Many popular bases are available and two lengths of double socket arms as well. Pound for pound and inch for inch, this new product line really measures up.