Specification: Material: Crystal glass and aluminum alloy Crystal diameter: Approx 30mm Base diameter: 18mm Total height: Approx 30mm Shape: diamond shaped Screws size: 4*25mm Color: Rose Gold Easy Installation: Find the position where you want to install on the board and drill a hole. Then pass through the screw from the back of board and thread tight to the knob. Application: The crystal knob is very pretty artistic and durable, Ideal for cabinet, dresser, drawers, cupboards, wardrobes, bookcase in your home, kitchen, bathroom, living-room, book-room, dorm and office. Best for decoration. Package Includes: 12 * Cabinet Knobs 12 * Screw