This is a handle for MoriMori's LED Lantern Speaper. The frame part is made of iron (steel), and the latch part is polycarbonate. The LED lantern speaker can be held firmly and suspended. 《How to install》 If you put your finger in the polycarbonate gray latch at the bottom of the handle and expand it to the left and right (outside), it will click off, so if you press the latch from both sides to match the knob part of the light intensity adjustment of the LED lantern speaker, it will click.