Self locking/ auto gripping hooks - Simple Picture Hanging

PeerBasics, Multi Grip Hook, 11 lb Capacity, Plastic, White, Hardware Included

2 Pack Adjustable Self-Locking Picture Hooks - Steel Wire only - Me Me Art

Self-Locking Hooks

Command Large Adhesive Picture Hanging Strips, White, 16-lbs, 4 Strips per Pack

Auto-locking Hooks – Hanging Systems

T-Lock security hangers locking hardware set for (25) wood or aluminum picture frames plus free HARDENED wrench! ArtRight

Self locking/ auto gripping hooks - Simple Picture Hanging

3 Ways to Use a Coat Hanger to Break Into a Car - wikiHow

Sign hanging systems - recessed ceiling - Artiteq