The universal camera and camcorder base consists of a B size 1" ball, connected to a round plate with a 1/4"-20 camera thread The round plate made of 6061-T6 aluminum alloy material provides extra support and stability for the camera it's attached to TPU over-molding ball head, wear-resistant and anti-slip, for durability and reliability in the most demanding environments The 1'' ball camera base compatible with RAM Mounts & BRCOVAN any B size 1 inch ball double socket arm The male 1/4"-20 threaded steel stud of ball base will connect to any standard female thread found on digital cameras, camcorders, and other devices. Thread pitch: 1/4"-20 x .25" The aluminum alloy 1'' ball adapter with 1/4"-20 threaded stud for action camera & camcorder. Compatible with RAM Mounts B size 1 inch ball double socket arm. TPU over-molding ball head, wear-resistant and anti-slip, for durability and reliability in the most demanding environments.