Description: 【Heavy Duty】: This spring door hinge ensures automatic and powerful door return, providing reliable self closing functionality for heavy doors 【Material】: Crafted from quality manganese steel, the hinge offers exceptional strength and wear resistance, guaranteeing long time use in demanding environments 【Compact】: Measuring 8*7.3cm, the hinge fits seamlessly into most door frame without taking up excessive space, making it suitable for a wide range of applications 【Complete Set】: Includes a spring hinge and six screws for easy installation, allowing you to set up your automatic door closing system quickly and efficiently 【Versatile】: Ideal for residential or doors that require secure closure and automatic reset, enhancing safety and convenience in any setting Specification: Material: Steel Size Chart: 8cmx7.3cm/3.15inchx2.87inch Package Includes: 1 Self Closing Spring Door Hinge, 6 Screws Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.