These are simple and reliable auto hinges that have a wide opening angle for easy storage in the cabinet. They are easy to install and corrosion-resistant. ms soft close 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. Specification : Wide opening angle for easy storage in cabinet, Concealed hinges for easy installation, Nickel plated for corrosion resistance.