The TABRMAMPS heavy-duty drill base mount is part of Arkon's Robust Mount Series. It mounts to walls or other solid flat surfaces with screws, and holds tablets with 8.9''-18.4'' screen size, including Apple iPad Pro, iPad Air 2 and iPad Air, iPad 4, 3, and 2, Samsung Galaxy View, Galaxy Note 10.1, Galaxy Note Pro 12.2, Galaxy Tab 4 10.1, Galaxy Tab Pro 10.1 and 12.2, Galaxy Tab S 10.5, Google Pixel C, Nexus 10 and Nexus 9, and LG G Pad 10.1. This mount includes the Heavy-Duty 4-Hole AMPS Mounting Pedestal and the Slim-Grip Universal Tablet Holder. The Slim-Grip tablet holder features a spring-loaded design that makes it easy to insert or remove the tablet by pushing down on the lower legs of the holder with one hand. Included with the holder are 10 support legs (4 short, 2 medium and 4 long versions). Choose the 4 legs that provide the best fit for your tablet. These insert at the top and bottom of the holder and can be easily adjusted in order to keep any side buttons and ports unobstructed. For most large tablets, the best mount holder configuration is to attach 2 short support legs on top and the 2 long support legs on the bottom of the holder. For smaller tablets, use all 4 short support legs. For larger tablets including iPad Pro, use all 4 long legs. For vertical viewing, adjust the 360-degree swivel. The mount uses the 4-Hole AMPS mounting pattern, which consists of four holes located in a rectangular pattern spaced at 30.17mm x 38.05mm (measured as the center-to-center distance between holes). The tough, low vibration pedestal measures approximately 4.5 inches high from the bottom of the mount base to the top of the mount pedestal (not including holder). The pedestal swivels on both top and bottom, providing flexibility in positioning the tablet at any angle. The mount can also be screwed directly into the floor of your vehicle. (Warning: Use caution and consult a mobile install professional to avoid drilling into any sensitive vehicle components.