Goliton Articulating Magic Friction Arm Large Super Clamp Crab Pliers Clip w/Stud Adapter 1/4" and 3/8" Included for camera DSRL -Black Rotating Length: 6.5CM Usage: Can clamp types of tubes, and coming with 1/4, 3/8 screw holes The screw can also be fixed with Ball-head or Reflective umbrellas joint, which can help the lighting engineers or photographers to easily install their lighting or photo accessories. Help lighting engineers or photographers fix their accessories more easily. Be able to fix onto any shaped body such as: water pipes, handrails, doors, shelves, tables, branches, wires, etc.