OOK® Kidsafe / Tremor hangers are ideal for homes that have small children! The frame will be securely held by clip on hanger lip so that frame does not fall off the hook when bumped. Great in high traffic areas to ensure the ultimate safety of the area. Great for hanging everything from plates to your child's masterpiece artwork. For drywall and plaster wall surfaces. Weight ratings are based on hangers nailed into studs and are for comparative purposes only. Choose a weight rating that greatly exceeds the object to be hung. Pound ratings are not cumulative.