These heavy-duty black L brackets are perfect for sturdy shelving solutions. Made of durable steel, each bracket measures approximately 4 inches by 4 inches with pre-drilled holes to easily attach 2x4 or 2x3 boards at 90 degree angles. The angle design provides superior strength and support so you can feel confident displaying even your heaviest books, electronics and decor. With a black powder coat finish, they will complement a variety of interior styles without drawing the eye. Reliable yet discreet, these brackets can be used to build shelving units for living rooms, home offices, garages or basements - anywhere you need extra storage that will hold up to daily use for years to come. Assembly is straightforward with the included hardware, so you'll be showing off your new shelves in no time.