Material quality: The heavy-duty frame brackets are made of high-quality iron, safe and reliable, not easy to deform, crack or break, the recessed brackets are reusable so you can easily change your design, create a new wall art look anywhere. Hidden design: The screw holes on the hanging rail have a recessed effect, the Z-shape is the easiest to connect hidden bracket, makes your picture frame fit perfectly on the wall without leaving unnecessary holes. Easy to use: On the wall you only need a drill and with a screwdriver, attach the two shackles to the wall and objects in opposite directions (up and down), then connect them to the other. Wide use: The z-mounting bracket is not only suitable for mounting mirrors, photos and whiteboards, but also artwork, wall clocks, shelves, on shelves, cabinets, whiteboards, garage tools etc. It can also be used as a loop for hanging headboards, for connecting sectional sofas and other furniture. Package contents: The heavy mirror mounting kit includes 2 heavy-duty frame mounting hooks, 6 self-tapping screws, 6 self-drilling screws, 6 expansion anchors, the combination is enough to meet your needs. You don't need to buy other accessories.