The pivot hinge, secret door, hidden door, bookshelf door, cabinet door, panel door, wine cabinet door, closet door, you can design and create the unexpected door opening in the movie by yourself with this set of hinges.This set of pivot hinges is mounted on the top and bottom hinges of the door and frame to open the door by rotating it on its axis, The weight of the door is carried by the heavy-duty pivot bearing at the bottom and the floor.Installation note, need to be installed by professionals, and design the door and door frame in advance, pay attention to the gap between the door and the door frame for rotation will not be stuck. Hinges need to be pre-slotted in the door frame, door and floor for embedding hinges.Package includes: door frame top hinge, top sector hinge, bottom sector hinge, floor hinge, screws, guide.