SEALESS ASSEMBLY: The two interlocking Z-clips fit snugly together to form a strong, snap-together assembly. As the photo mount is only 2mm thick per piece, there is very little space against the wall. SUPER SECURITY: The recessed mounting brackets with Z-lock Lock provide ultimate security to prevent mounted items from falling. Premium cold rolled steel with maximum corrosion resistance gives the wall mount clamps durability for long use. EASY INSTALLATION: The sleek design with countersunk and symmetrical screw holes allows quick and easy installation. Just attach one clip to the wall using long screws with the bulge facing up, then attach another clip to the furniture using short screws with the bulge facing down, then lock them. PRACTICAL AND REUSABLE: Heavy duty flush mounting brackets can be used individually for small pendant lights. For large wall hangings, multiple mounts are recommended. When you need to remove items attached to the wall for cleaning or other reasons, simply lift them off the brackets. WIDE APPLICATIONS: Interlocking lock hangers are perfect for securing frames, artworks of art, exhibition paintings, posters, headboards, clocks, mirrors and more, to bring elegance to your home and office. Features: -Made of high quality stainless steel, ensures stability and long-term service. - Z-clip lock design provides great security and prevents mounted objects from falling. - Flush mounting brackets are a versatile hanging device designed to keep objects flush with the surface of the mounting structure. > - Sleek design with countersunk, symmetrical screw holes allows for quick and easy installation. - Ideal for securing picture frames, artwork, display paintings, posters, headboards, clocks, mirrors and more, bringing elegance to your home and office. Specification: Material: Stainless Steel Color: Silver Large Size: 53 x 30mm / 2.1x1.18 inch Small Size: 43x19mm / 1.7x0.75 inch Thickness: 2 mm / 0.08 inch Screw required: M4 (not included) Range delivery: 10 Pieces * Large picture frame hook 10 Pieces * Small picture frame hook