Floating Shelf Brackets (Pair) - 1/2" post "Standard Duty" in the title for this hidden hardware can be misconstrued to mean that they don't hold much weight. When installed correctly, these floating shelf brackets have been tested to ~100lbs per pair (directly on the stud. When I reached failure, it was the fasteners - not the bracket - that gave way.) If you aren't confident installing these yourself, please consult a professional. I take the time to make sure each shelf bracket meets my high standards. Sure, these brackets are a bit more expensive than the competition, but you really get what you pay for. Superior quality construction, high strength 1018 steel, made in a machine shop. These are machined on precision equipment to tight tolerances to make sure you get the best possible results. Measurements: Backing Plate: 1-1/2" x 2" x 3/16" steel plate, 2 holes drilled for #10 screws Post: 2" - 11" x 1/2" round *** These come as PAIRS. *** ** UPDATE: These now come unpainted. I apologize for the lack of new pictures. These shelf brackets are called "hidden hardware" for a reason :) **