Keyhole Fittings-Select either single or double

This brass insert takes all the trouble out of making a keyhole slot for hanging pictures or other items

Buy Keyhole Companion No Measuring Needed To Mark Keyhole Slot Fastener Location Picture Hanging Hardware For Walls Cabinets at Aliexpress for

keyhole slot About the product The keyhole frame hanging kit has everything you need to hang objects with keyholes easily This keyhole slot marking tool set includes

keyhole slot plug Vertical mounting has obvious advantages, as you say Most plugs are designed to plug into a wall, not a ceiling The hard part is finding M8