National Hardware 3" Black Full-Surface Spring Door Hinge (2-Pack) features a robust 3-inch cold-rolled steel construction with a solid brass adjustable collar. Designed for versatility, this hinge includes a strong fully enclosed spring that works on both right-hand and left-hand doors. The stud pin allows you to adjust the closing speed to your preference, ensuring smooth and controlled door operation. Its full-surface application means no mortising is required, making installation quick and easy. Each pack contains one pair of hinges, complete with screws for convenience. Model Number: N114-975