Our hot shoe adapter has a 3/8-16″ threaded male spud. The 6″ long baby pin (5/8″ diameter) screws onto the adapter.This is used on all cameras that have a hot shoe to help stabilize the camera when used on camera mounts. Attach grip arms to the pin and triangulate the arms to a solid structure using Cardellini clamps, grip heads, and/or suction cups.