4" x 4" x 1/4" Radius Hinge, Heavy-Duty, Steel (Pair) is a set of two hinges designed for residential and commercial door applications. Constructed from steel, these hinges feature a 1/4" radius corner style and are intended for full mortise mounting. Each hinge measures 4" x 4" with a thickness of .129". The set includes No.12 x 1/2" machine screws and No.12 x 1" wood screws for installation. These heavy-duty hinges are designed for standard door operations and come in an oil rubbed bronze finish. The hinges are suitable for indoor applications where a reliable hinge is required for door movement. The full mortise mounting method allows the hinge to sit flush within the door and frame, providing a clean appearance. The steel construction provides a base for the oil rubbed bronze finish, which is applied to the surface of the hinge. The package contains a pair of hinges, which is the standard unit of measure for this product, allowing for the installation of one door. The hinges are designed to be used with standard door hardware and are compatible with common door frame preparations. The inclusion of both machine and wood screws ensures that the hinges can be attached to various door materials, including wood and metal frames, depending on the specific installation requirements.