: 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 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 Features rounded or modern square handle designs with matte black finish, perfectly various home decor styles for enhanced aesthetic appeal Including an external cylinder, an indoor anti knob, and a matching indoor ball, a complete set meets the needs of door protections and use Made from high-strength Metal alloy, the set excellent resistance to and wear, Manufacturer: ZYOUQI