1.More Sturdy:The folding shelf bracket slide reinforced and widened,stronger than ordinary slide to prevent deformation,rivets using strong performance chain nails to prevent rivets from falling off. 2.More :Black folding wall shelf bracket made of metal. Scratch and corrosion resistant. 3.Good Quality:The folding table bracket is 90 degrees,the surface is flat;the edge of the collapsible shelf bracket is smooth to prevent scratching;the folding switch is extended to avoid wall wear. 4.More Size & Widely Used:Dimensions of the foldable shelf bracket:8 inch-24 inch,Sturdy triangular construction,Max load: 410 lb,These shelf bracket are perfect for many home DIY jobs.Could be used to make a folding workstation in your garage,stores,workshops,boats,motorhome,backyard,trailer,room, kitchen,balcony,bathroom.