The bracket is made of steel, and it is safe and non-toxic. It issuitable for bookshelf, storage organizer and board. The bracket can be usedrepeatedly and durable for long time use.Features:High quality steelmaterial, odorless, safe and non-toxic.It issuitable for book shelf, storage organizer, and board.Sturdy and itcan bear heavy weight, easy to use.Easyinstallation: easy to install the bracket for your book shelf.Reusable anddurable: can be used repeatedly and durable for long time use.Specifications:Condition: Brand NewMaterial: SteelColor: SilverStyle: 3in, 4in, 5in(Optional)Weight: approx.143~210g/ 5.04~7.40ozPackage List:2* BracketsNotes:1.Please allow 0-2cm error due to the manual measurement. Thanks for yourunderstanding.2.Monitors are not calibrated same, item color displayed in photos may be showingslightly different from the real object. Please take the real one as standard..