Flat Black Privacy Door Knob Interior Bath Bed Lock Flat Ball Keyless Lock.

• Flat Ball Knobs Black Finish;
• Confirm with ANSI Grade 3, Exceeds 200,000 cycles;
• Adjustable Backset - 2-3/8 inch or 2-3/4 inch (60mm or 70mm); Fits doors thickness: 1-3/8 inch to 1-3/4 inch (35mm to 45mm);
• Rose Diameter: 65mm/2.5inch; Ball Knob Diameter: 57mm/2.25inch;
• Universal handing; fits both right handed and left handed doors;
• Please notice the square plate of the latch is not removable.
• with lock function but keyless, you could locked inside, but can't open outside as there is no key. Usually for Bedroom/Bathroom door. (could open with coin in emergency)