The Free Hanging Countertop Support Bracket is a set of 4 heavy-duty hidden floating shelves made of steel, measuring 20 inches in length and 2.5 inches in width. The black color and T-shaped design add a sleek and modern look to any kitchen or dining space. With a weight capacity of 18.3 pounds, these wall-mounted brackets provide sturdy support for countertops or shelves. Perfect for adding extra storage or display options in a stylish and convenient manner.