Genuine Antique Solid Brass Door Knob Set  Retro Fit for Modern Doors pressed steel plates are 8 1/4" x 2  3/8" wide which will cover a Modern door hole saw cut which are 2" in diameter;(shown 5th picture), conversion latch included will take the antique 1/4" square drive spindle also included.  Standard Backset 2 3/8". For right hand OR Left hand doors, strike plate included. These sets are passage latch only, you will need a separate dead bolt if you want that. These are 90 years old and will last another 90 years.           #599