The parts that make up a hinge will vary in appearance for different hinge types and styles, yet they still perform
the same functions. Reversible hinges may be used on either left or right-hand cabinet doors. Frame Wing: Part of the hinge that attaches to the cabinet frame. Door Wing: Part of the hinge that attaches to the cabinet door. Knuckle: Connects the frame wing and door wing and allows rotation. Pin: Holds the hinge together.