【Prevent picture falling】: Earthquake Hooks are for areas where the wall shakes from slamming doors, trains or earthquakes. Tremor Hangers are also called Kidsafe Hangers since they help prevent a picture from being pulled or bumped off a wall.,【Wall Type Match】: Safe Picture hangers work well in drywall, wood or plaster walls and will support 30 pounds.Note: No for concrete wall or ceramic wall. If the nails can't be into the wall,drill with electronic drill and put expansion screws in .(Expansion screws not included in the package),【Easy Fixation & Recycled 】:Just with a hammer, you can fix it on the wall. The top bulgy design protects your fingers being knocked while installing. Amazingly, this picture hanger can be carefully removed from the wall for recycle, which helps you save more cost.,【Good packaging】: Hooks are packed in small reusable boxes and are ideal for storing in a toolbox or drawer. Easy to take out every time you use the hook, it will not be found or cluttered.,【Easy to Use】: Earthquake picture hooks hold the picture frame wire under the hook's spring. When hanging your art,use your finger to guide the wire to slide or snap under the hook’s spring. The wire can slide under the spring on the front of the hook. The spring can also be rotated away from the hook to hang the picture.