Andoer Camera Magic Friction Arm Small Super Clamp Crab Pliers Clip Small-size 4.9cm Bite Black Small-size Camera Pliers Clip. Coming with screws of 1/4 and 3/8. Help lighting engineers or photographers fix their accessories more easily. Be able to fix onto any tubes coming with size from 1.2-4.9cm. Be able to fix onto any shaped body, such as water pipes, handrails, doors, shelves, tables, branches, wires, etc.