The exterior corner bracket is made of metal, exquisite workmanship, white-painted on the surface, waterproof and rust-proof, and the bottom is a right-angle 90-degree mounting feet, which can stably fix the camera between two external vertical walls. You can also attach other suitable camera brackets to this right-angle corner bracket together. Item Size: Approx. 85mm x 65mm x 55mm (3.35 inch x 2.56 inch x 2.16 inch)