This adapter is a 3.5” long 5/8” baby stud with 3/8”-16 male thread 25.4mm in length. It can be used with a grip head or convi clamp and attached to any accessory with female 3/8" threads, such as an articulating arm. In addition, the male threads can be mounted to a clamp or another piece of grip gear, while the stud end supports a light or other equipment with a 5/8" receiver. The stud end has a knurled finish to prevent twisting.