2" x 2.5" Diameter Base w/1" BallThe RAP-B-202U-225 high strength posite flat surface base contains a 1" diameter rubber ball connected at right angles to a 2" x 2.5" rectangular base. This mount has pre-drilled holes at each corner of the base plate. Material: High Strength CompositeBall Size: 1" Rubber Ball "B" Size Note: The "U" in the part number reflects product packaged in poly bag. Mounting hardware not included with purchase. Product : RAM MOUNT 2" X 2.5" BASE W/ 1" BALL Manufacturer : RAM MOUNT Manufacturer Part No : RAP-B-202U-225 UPC : 793442908811