High Quality: #1 Garage door hinges are made of high-quality steel, which is sturdy and durable. The surface is galvanized to prevent rust and is suitable for long-term use. Tests have shown that the door can be opened and closed at least 10,000 times Specific #1 Hinges:The garage door hinge is designed to connect the first and second panels of the segmented garage door and accepts 7/16-inch diameter rollers to ensure smooth operation Easy to Install: Heavy-duty garage door hinges are easy to install and come with the screws and nuts needed for installation. They are a great alternative to heavy-duty garage door accessories and old damaged garage door hinges Wide Application: Garage door hinges are suitable for residential and light commercial garage doors, such as automatic garage doors, solid wood garage doors, remote-controlled garage doors, arched garage doors, villa garage doors, and engineering garage doors The Product Includes: The package contains 2 pack of #1 garage door hinges and installation screws hardware. If you have any problems with your garage hinges, please contact us and we will provide the best service