SPACE SAVING AND AS A WORKBENCH: The counter extension hinges lock at 90 degrees. Lay down when not in use, or pull up when needed. You can use shelf brackets to made a pull up cutting board, be a counter top extension beside the stove top, use these folding shelfs in RV for a table, and so on. VERY STURDY, LOCKS AND RELEASES EASILY: These folding shelf brackets click open into the locked position very easily, they fold down when not in use with a simple click of the small lever, and they were so easy to install. WIDELY APPLICATION: These collapsible shelf bracket are perfect for many home DIY jobs.Ideal for stores, workshops, boats, motorhome, backyard, trailer, room, kitchen, balcony, bathroom, etc. Enough to be used as bookshelf brackets, kitchen shelf brackets and exhibition stand. HEAVY DUTY: Per pair table brackets can hold up to 100 lbs. These metal shelf brackets are durable and made of heavy-duty steel with strong smooth surface. They are heavy duty wall mounted shelves. Quantity delivered: 2 pieces Product color: black Product size: 24.5*10cm