Amazon.com: Framendino, 20 Pack Silver Metal Single Keyhole Hangers with Screws Metal Keyhole Hanger Fasteners Picture Hanging Bracket Plate for Mirror Picture Frames 43 mm x 16mm : Tools & Home Improvement
Hillman Fasteners 122211 Single Light-Duty Keyhole Hanger, 9/16" x 1-5 – Toolbox Supply
Keyhole Fittings-Select either single or double | Rockler Woodworking and Hardware
20 Pcs Keyhole Hangers Metal Fasteners for Picture Frames Mirrors Cabinet,Metal Keyhole Hanger Hanging Fasteners Hardware Flush Wall with Keyhole, 42 mm x 14 mm Flush Mount Hardware(No Screws,Silver) - Amazon.com