Steel nickel plated rim lock with 30 mm or 1 3/16 inch backset with Key way insert.23.557. Door thickness 9/16 to 3/4 inch. By flipping the keyway before inserting the 90 degree turn is either clockwise or anticlockwise. Or - the turn will be to the left or to the right. All sizes approximate. Angle strike plate included. Lock size: 55 x 49 x 16 mm.