The RAM® No-Drill™ Laptop Mount consists of a 2.25" diameter rubber ball, connected at right angles to a 3.68" diameter round base. The base has pre-drilled holes, including two holes at 180 degrees and three holes at 120 degrees. KEY FEATURES RAM® No-Drill™ base offers low-profile mounting; telescoping pole allows for height adjustments Dual articulating swing arm allows for ideal placement; universal laptop tray accommodates most laptops Made of powder-coated steel and marine-grade aluminum The RAM® No-Drill™ Dual swing arms provide articulation and 12 inches of reach for passenger and driver access to the mounted device. Patented rubber ball and socket joint provides additional adjustment as well as shock and vibration isolation. The RAM Tough-Tray™ is spring loaded to accommodate 10" to 16" wide laptops (17" wide screens). The tray features four adjustable retaining arms with rubber grip feature. These arms can be moved both vertically and horizontally. This allows for a custom fit for varying thicknesses of laptops and the freedom of not blocking ports or drives. A screen support and USB light are also available to accessorize the tray. Hole patterns on the perimeter of the tray facilitate the mounting of additional RAM systems to support GPS or other electronics.