Description: Spring Assisted Hinge: The Spring Assisted Hinge features a spring assisted design that provides an automatic rebound effect, making it easier for you to open and close the door without straining your muscles. The door will not automatically rebound when fully opened, making this device easy to use for extended periodsMaterial: These Door Hinges are made from zinc alloy, using advanced polishing and chrome plating techniques. They offer good sealing performance to minimize cold air leakage and ensure long term durabilityVersatile Application: These Hinges are typically used for doors. They are extremely sturdy once installedInstallation: The hinge is easy to install, no other professional skills or tools are needed Package Included: 1 Spring Assisted Hinge for your convenience Specification: 25cmx14cm/9.84inchx5.51inch Package Includes: 1Spring Assisted Hinge Note: Please allow slightly errors 1-2cm differences due to manual measurement.