This RAM-2461U-IN1 consists of a 1.5″ rubber ball, connected to a 3.625″ steel reinforced square plate with a 75mm X 75mm VESA hole pattern. The rubber ball is positioned 0.88″ from the center of one edge. Material: Powder Coated Marine Grade Aluminum Ball Size: 1.5″ Rubber Ball Size Note: The „U” in the part number reflects product packaged in poly bag. The RAM-2461U-IN1 is compatible with the following electronic devices:MobileDemand XTablet T8600Glacier Computer RidgelineRouteware DMS 5000 The cradles for these electronic devices are sold strictly through the manufacturer. Click on the links above to view their cradles.