POWERFUL LOCK: Recessed mounting brackets with Z-Lock latching provide ultimate security to prevent mounted items from falling out. Premium cold rolled steel with maximum corrosion resistance gives interlocking brackets durability for extended use SEAMLESS ASSEMBLY: The two interlocking Z-clips fit together snugly to form a strong, interlocking mount. Since the furniture connector is only 2 mm thick per piece, there is only a very small gap left after assembly EASY INSTALLATION: The sleek design with countersunk and symmetrical screw holes allows for 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 WIDE APPLICATIONS: Interlocking lock hangers are perfect for securing picture frames, artwork, display paintings, posters, headboards, clocks, mirrors and more, bringing elegance to your home and your PRACTICAL AND REUSABLE desk: The heavy duty picture frame hooks can be used individually for small hangings. For large wall hangings, multiple mounts are recommended. The interlocking design allows for its repeated installation and separation. When you need to remove items attached to the wall for cleaning or other reasons, simply lift them off the brackets