1. This ensures that the rotation of the cylinder wrench is very smooth while blocking access to the impact keys. 2. We offer locking cylinders in different sizes. You can choose between double and button lock cylinders to meet your different installation requirements and protect the safety of your home. 3. When you insert the key to use it, the rotation is even and there is no jam, making it convenient for opening and closing the lock cylinder. 4. Nickel cylinder lock, suitable for a variety of doors, including wooden doors, composite doors, metal doors, interior doors, front doors, and most doors with a keyhole. 5. Features antipick, antidrill, and antibump protection to give you peace of mind and proper home security. 6. With a unique antibump protection that does not use trap pins. This ensures that the turning of the cylinder wrench is extra smooth while blocking the access of bump keys. 7. Enjoy improved safety without costly handle upgrades or additional safety devices. Enhances theft resistance and ease of use of the lock cylinder. 8. These door locks are suitable for all door types, including wood, metal, patio door locks, French doors, and composite doors.