Standoff Mounting Hardware: This wall-mounted hardware is designed to support panels made of acrylic, wood, aluminum, plexiglass, glass, or other display substrates. It is also suitable for supporting a glass tabletop on a wooden base. Diameter: 1/2 inch/12mm, Base Length: 0.59 inch/15mm, Cap Height: 0.16 inch/4mm, Thread Size: 15 x 8mm / 0.59 inch x 0.31 inch (length x diameter). The mounts are adjustable for versatility when signage needs to be moved or replaced. Rugged & Durable: Constructed from high-quality stainless steel, it is corrosion-resistant, scratch-resistant, and durable, ensuring a longer service life. Widely Used: This hardware is often utilized by designers to create simple and attractive signs, install modern dry erase boards, and display glass paintings or artworks on walls. Wall mounting screws are ideal for offices, supermarkets, shops, bedrooms, and more. They combine both beauty and practicality. Specification: 12mm x 20mm, color: black, Material: stainless steel. Package Contents: 24 pillars, 48 rubber gaskets, 24 screws, 24 wall anchors. Only the above package content is included; other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the actual product. The allowable measurement error is +/- 1-3mm.