1. This ensures the rotation of the cylinder wrench is exceptionally smooth while preventing access to the impact keys. 2. We provide locking cylinders in various sizes. You can select between double and button lock cylinders to suit different installation needs and enhance home security. 3. When inserting the key, the rotation is even and jam, ensuring smooth operation for opening and closing the lock cylinder. 4. Nickelplated cylinder locks are compatible with a wide range of doors, including wooden, composite, metal, interior, front doors, and most doors with keyholes. 6. The product is durable, easy to install, and ideal for most households. 7. It offers competitive pricing, a fit, and an appearance that meets your lock cylinder requirements. 8. Enhanced door safety allows you to enjoy greater security without costly handle upgrades or additional protective devices. 9. The key door lock features unique anticollision protection and prevents pin trapping, ensuring even key rotation while blocking impact key insertion.