- Round Ball Design: Enjoy a sleek and modern look with this ball-shaped door knob. Its polished brass finish delivers a brilliant, mirror-like gold hue, adding a touch of elegance and sophistication to your doors. - Durable Construction: Crafted from premium materials and exceeding ANSI/BHMA Grade 3 certification, this door knob is built to last. The electroplated finish provides water resistance, ensuring durability and reliability for years of use. - Keyed Entry Function: This door knob features a dual-sided locking mechanism, with one side secured by a key and the other by a turn-button. Perfect for enhancing security on front doors, office entrances, and bedroom doors. - Standard Compatibility: Designed to fit standard doors with a thickness of 35-45mm (1-3/8" to 1-3/4"). The adjustable latch accommodates backsets of 60 or 70 mm (2-3/8" or 2-3/4"), making it versatile for various installations. - Easy Installation: Installation is straightforward and requires only a screwdriver, making it a quick and user-friendly process. The reversible design allows for suitable use on both right and left-handed doors. Use Scenarios: - Upgrade your front door for a refined appearance while ensuring security with a stylish touch. - Enhance office privacy with a reliable locking mechanism that is easy to operate. - Refresh bedroom doors with an elegant knob that complements your interior decor while providing secure access.