National Hardware 3" Zinc Plated Full-Surface Spring Door Hinge (2-Pack) is designed for durability and ease of installation. Made from 3" cold-rolled steel with a solid brass adjustable collar, this hinge features 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. Its full-surface application eliminates the need for mortising, making installation quick and straightforward. Each pack includes one pair of hinges along with screws, all presented in a clear visual pack for convenience. Model Number: N115-055