MS normal auto hinges are a type of concealed hinges that can be used for wooden doors, aluminum profiled doors, or glass doors. They are made of mild steel and have a nickel finish. They have different crank sizes, such as 0°, 8°, or 16°, to adjust the opening angle of the door. They are also known as self-closing hinges or auto hinges, as they can close the door automatically after opening. Specification : Wide opening angle for easy storage in cabinet, Concealed hinges for easy installation, Nickel plated for corrosion resistance, These are high-quality auto hinges that have a high-strength hydraulic pump and a clip-on mechanism.