Size: 12Inch Hidden Brackests: Our floating shelf brackets can be installed upwards or downwards. Can be installed by a single person. These shelf brackets have no lips and can be truly hidden. The base can be blocked by the plank, creating an amazing floating illusion. Different sizes We provided 4 in, 6 in, 8 in, 10 in and 12 in wall shelf brackets. Weight capacity 150 lbs. Be sure to double check the countertop dimensions before purchasing! Rounded Corner Design: Crafted with premium metal to ensure exceptional durability and stability. Additionally, the edges of the countertop shelf brackets are rounded design, smooth and round, to avoid being scratched. Versatile Applications: Our haevy duty brackets are ideal for supporting wood, and laminate countertops. They provide essential strength for heavy countertops in kitchens and bathrooms, as well as in various residential settings. Additionally, these brackets are widely used in commercial spaces such as restaurants, bars, and hotels, ensuring reliable support for countertops and bars to meet the diverse needs of different industries. Complete Accessories: We've included all the necessary screws for a hassle-free installation. Simply align the brackets, secure them with the provided screws, and your shelves will be ready to use in no time.