The RAM-101U-ZE1 consists of a medium length double socket arm, two 2.5" diameter round bases that contain the universal AMPS hole pattern and hardware to attach to the Zebra RW 420 printer. The mount is designed with a 1.5" diameter patented rubber ball and socket system that has adjustment points at both ends of the double socket arm; this allowing for almost infinite adjustment and perfect viewing angles. The included RAM’s patented design dampens shock and vibration, helping to extend the life of your device.