The RAM camera base contains a 1.5" rubber ball that is connected to a 2.5" diameter round base. Also, included is a 3/8"-16 threaded steel stud, centered, the round base provides support and stability for cameras that rest on top of it. The male 3/8"-16 threaded steel stud will connect to any standard female thread found on camcorders and digital cameras.
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.