Superb Quality: The black shelf brackets are made of high-quality iron, painted black, smooth, durable, firm, and not easy to break. The edge is smooth and will not hurt your hands. Multifunctional: Mounted under your board, it can support your shelf securely. Mounted above your board, working as a bookend, it can help you prevent books or other items from falling off the end of the shelf. It can also protect your hand without scratching the wooden shelf burrs. Heavy Duty: The heavy duty shelf brackets are designed with a triangular fixing principle, supporting up to 20 kg. Can meet your daily storage needs. Hidden solder joint and 90-degree bend. It may look slim and simple, but it has a strong triangular structure that provides plenty of weight-bearing capacity. DIY Shelf of Your Own Style: The shelf brackets are ideal for maximizing space with style in indoor and outdoor spaces, which is ideal for kitchen, bathroom, bedroom, office and more, which can DIY a bookshelf, table legs,