RAM 1″ Diameter Ball with 1/4-20 Stud for Cameras, Video & Camcorders The RAP-B-366U, universal camera and camcorder base, 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 [...]