5 5/8″ high x 3 1/8″ wide x 15/16″ deep (Actual: 4.602″ high x 3.120″ wide x .943″ deep x .225″ plates). Brass body. Steel shackle. Extra-large shackle. Extra-large clevis. 4 levers. Lever position 5 pushes the runner plate. The left keyway is for the servant key. The right keyway is for the master key. Rotate servant key 180 degrees clockwise to open lock. Rotate master key 180 degrees clockwise to open lock. Rotate master key 360 degrees counterclockwise to disable servant key. Rotate master key 360 degrees clockwise to enable servant key. The lock snaps shut. The master keyway is smaller than the servant keyway. The master gates cannot be over pushed. The servant gates can be over pushed. The lock does not match the patent exactly.Patent #169886. More… This is the largest Kaye padlock made. Show Mechanicals