JCBIZ 12pcs Plastic Furniture Corner Brace Joint 4-Hole Right Angle Board Holder Shelf Support L Shape Bracket Black. Feature: Type: Corner Brace Material: Plastic Color: Black Size: 27.5×26.5mm (LxW) Mounting Hole: M3 High Quality Material: Made of international standard thickened PP, non-toxic harmless, safe and corrosion-resistant, colorful customized, more beautiful and practical.