Ram Mount 75mm X 75mm VESA 3.625-Inch Plate with 1.5-Inch Diameter Ball Consists of a 1.5" rubber ball, connected to a 3.625" square plate with a 75mm X 75mm VESA hole pattern The rubber ball is positioned 0.88" from the center of one edge Powder Coated Marine Grade Aluminum Compatible with the following electronic devices: Mobile Demand XTablet T8600, Glacier Computer Ridgeline, Routeware DMS 5000