Including an external cylinder, an indoor anti knob, and a matching indoor ball, a complete set meets the needs of door protections and use : The handle, cylinder, and knob all have standard installation dimensions and do not require additional openings, making it suitable for installation on most wooden doors and anti-theft doors Features rounded or modern square handle designs with matte black finish, perfectly various home decor styles for enhanced aesthetic appeal Made from high-strength Metal alloy, the set excellent resistance to and wear Easy to operate, press down to open the door, lift up to, and can be easily used, suitable for scenarios such as entrance doors and indoor doors, Manufacturer: KAHDGSS