●Convenient to Use: The skeleton key set includes two keys each for KY-32 and KY-33, providing more opportunities to try to open the doors. It saves the unnecessary service fee of hiring a maintenance worker to come to your home. ●Replacement antique keys used for old style doors. ●These skeleton keys are usually designed with hollow shafts, allowing them to open doors with pin tumblers inside. They are made of solid brass or die-cast zinc, and are finished with various surface treatments, making them sturdy and durable. ●Selecting the correct skeleton key to open old-style doors is not a simple process. It requires great patience, luck, and repeated attempts. ●Two keys each for KY-32 and KY-33 skeleton keys kit for old style doors.