This is a Miwa Lock PR cylinder with dimple keys. It was used on a Sankyo Tateyama Aluminum Raforce entrance door. All five original keys are included. See photos. While the door usually comes with a PS (DN) cylinder, this is a high-security PR cylinder, also used in luxury apartments. For security reasons, the keys are hidden in the photos. All keys have been tested and confirmed to work. Please only purchase if you understand that this is a used item. Due to the nature of security products, returns and claims are not accepted after purchase. Thank you for your understanding.