Tether Tools JerkStopper Thread Mount - 1/4"-20 thread w/ Lock Nut Anchor Thread Mount to any female 1/4"-20 clamp, arm or device to secure cable Included aluminum lock-nut to rotate JerkStopper and lock any direction Use with any cord or cable with diameters from 3.5mm to 8.5mm Keeps plug in and protects port and cable from damage All other items pictured sold separately.