MATERIAL: The foldable bracket is made of galvanized metal iron, solid and durable Made of thickness steel plate, each bracket could hold 500 pounds EASILY FOLD AND SELF-LOCK: For added security, these brackets feature spring-activated "positive lock" that assures stability by locking in the open position When the table or working surface are not in use, just press the black button on the hinge, and fold down for more space MULTI -APPLICATIONS: Perfect for furniture leg, folding wooden bed, outdoor desk, dining table, DIY platform, workbench, and wall support shelf, anywhere need to use for extension table bed leg feet, etc BIG IDEAS FOR SMALL SPACES: Support bracket is ideal for where limitations or flexibility in space are critical, such as kitchen, laundry room, retail or grocery stores, RV, boat, warehouses, industrial, garages, maintenance storage, office or residential storage TIP: The foldable bracket is hard to fold and release bracket by your hand before install on the table leg, Easy to fold or release after you finish to install Easy install, in just minutes can be completedProducts from GuanGuan's store