Reliable Material: The adhesive frame clip is made of ABS and strong adhesive backing. The hook part is made of high quality stainless steel. It is durable, lightweight, safe, reusable, not easily deformed or broken, and with excellent craftsmanship, it will support you for a long time. Plastic Hooks: You will receive 20 invisible adhesive hooks, quantity enough to cover your daily use and replacement. Dimensions (L x W): 2.2 x 2.2 cm. Powerful Self-Adhesive: This picture hanger is made of sticky feature, it can be firmly fixed on the wall or other smooth surface, not easy to fall off, no need to punch holes, objects can be hung directly. It can bring you much convenience and can give you a wonderful visual enjoyment. Picture Hooks: Remove the protective film at the back of the plate holders and stick them on the back of the objects you want to hang on the wall. The using process is very simple and convenient. No nails or holes, no surface damage.