The product is durable and easy to install, so it is suitable for most households. Key for additional security and helps to prevent them from being copied by unauthorised people who might have occassional access to your keys. Your satisfaction is our eternal pursuit, please rest assured to buy, welcome your presence, and wish you a happy life. The price is competitive, with precise fit and appearance, which can meet your needs for the lock cylinder. When you insert the key to use it, it turns smoothly without any resistance, making it easy to lock and unlock the door., Manufacturer: YKMYXZ