This product is mainly used for the fixation of some lamps with flexible hoses. Connect the mounting hole to the lamp hose or microphone hose. And then clamp it on bed headboard, desk, table, bookshelf, or piano. Besides, you can also use the clip for other purposes like clamping paper sheets, photos, and maps. Or even for sealing bags. Specification Color: Black Material: Plastic, Steel Total Size: 118x76x93mm / 4.57 x 3 x 3.66 inch (D*H) Hole Dia.: 10mm / 0.39 inch Packing List: 2 x Reading Light Clips Advantages 1. These clips have several colors for you to choose, a beautiful appearance. 2. With the anti-skid and scratch-resistant mat design, easy to attach anywhere. 3. Steel material can make sure the spring is not easy to deform or damage. At the same time, the thicken steel spring make sure the clips have a strong force to clamp. Instruction Easy to use, threaded the M10 lamp hose or microphone hose into the mounting hole, and then clamp it on your book or bed headboard. NOTE:If you want to use it for holding lamp hose or microphone hose, please check our clip's hole size and make sure your can use it.