The Guard 1990 X 2 PACK Keyed Alike Entry Knob Sets are a set of two key entry knobs that are suitable for front doors, side entrance doors, and backdoors. These knobs are from the Guard brand and come with keys included. The model GD 1990 X 2 KA provides a secure and convenient way to lock and unlock your doors, making it a practical choice for home security and personal privacy.