PIXNOR Wall Mounted Floral Style Shelf Brackets for Bookrack Calpboard - 2pcs (Black) Color: Black. Mateial: Durable iron. Size: 20 * 20cm. Adopts floral pattern design in triangle shape. Firm and sturdy to hold your bookrack, clapboard, set up box etc. Comes with screws for easy installation. Vintage shelf brackets for convenient lifestyle.