Foolproof hanging with keyhole slots

Keyhole Hanger Installation keyhole slot hanger Introducing Keyhole Companion - Unique Tool Set for Marking Keyhole Slot, Keyhole Hanger, Keyhole Hardware Fastener Locations on Mounting Surface keyhole slot hanger Fixing Materials Cabinet hanger, For mounting in drilled hole, keyhole slot

keyhole slot Steel keyhole slot hanger with 2 screws Keyhole slot allows a screw head protruding from a wall to lock securely onto the project piece you are hanging