Features: Make of stainless steel, rusts protections and antioxidation, very Enduring. Entrance door knobs feature a small turn snib on one side for locking the door and a lock and key mechanism on the other side of the door. Enduring and practical Rotating lock can be unlocked from the outside by a key, and locked by the inner rotation. Suitable for use on bedroom door or any other internal door where privacy is required. Easy Installation: With hardware components for quick installation of your new door handles. Universals handling for left or right door. Specifications: Materials: Stainless steel Color: Silver/Red Bronze/Black Color/Gold/Blue Bronze Lock panel diameter: about 6.4cm/2.52inch Panel thickness: about 2.4mm/0.09inch Lock tongue: about 2.50cm/0.98inch Package Includes: 1set Round Entry Door Handle note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to difference between different monitors, the picture may not reflect the actual color.