Ram Mount 1-Inch Diameter Ball with 1/4-Inch-20 Stud for Cameras, Video and Camcorders (Black) Consists of a 1" diameter rubber ball, connected to a round plate with 1/4"-20 camera thread The round plate provides extra support and stability for cameras that rest on top of it The male 1/4"-20 threaded steel stud will connect to any standard female thread found on camcorders and digital cameras High Strength Composite