Designed for mounting overlay doors—the type of doors that overlap a cabinet’s frame—the pivot hinge is formed from two bent metal pieces joined at a single pivot point.
Top- and bottom-mounting pivot hinges are sold in mirror-image pairs, one for the top of a door and the other for the bottom. Center-mount types are meant to be notched intermediately into the edge of a door. Screws in adjustable, elongated holes attach the leaves to the cabinet frame and back of the door.
One of the benefits of a pivot hinge is that, when the cabinet door is closed, the hinge is barely visible.