National Hardware 3" Black Square Door Hinge is designed for durability and functionality. Crafted from heavy-gauge cold-rolled steel, this hinge enhanced strength for reliable performance. It features a flush pin that provides a clean, finished look, and a 5 knuckle full mortise design with square corners for a classic appearance. The screw holes are countersunk to ensure a neat installation, and the removable pin allows for easy installation or removal of doors, making it a practical choice for various door applications. Model Number: N830-424