With 2 screw holes, reinforcing crimp inside the angle so they won't bend under load.
20PCS Heavy Duty Corner Braces L Shape Brackets 30x30x30mm, 90 Degree Joint Right Angle L Bracket for Furniture Wood Cabinets Shelves,Package Include Screws
Right angle L bracket corner brace 75mm 3" fixing support bracket, pack of 4
50X Corner Brace Joint Right Angle L Bracket Stainless Steel Shelf Support
50/100PCS Corner Brace Joint Right Angle L-Bracket Stainless Steel Shelf
A2 Stainless Steel 90° Right Angle L Bracket Corner Brace for Cabinet Furniture
Corner Braces Brackets Right Angle L Brace Bracket Stainless Steel Angle Code
