The RAM-B-202A, universal camera and camcorder base, consists of a 1" diameter rubber ball, connected to a 2.5" diameter 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.
4-Hole AMPS: 1.181" x 1.496"
3-Hole 120-Degree: 1.812" Diameter