Probrico privacy door knobs are designed for interior bathroom and bedroom doors, offering privacy with a thumb turn lock. Crafted from stainless steel with a brushed nickel finish, these knobs combine style and security, suitable for standard door thicknesses of 35mm-45mm, with adjustable backsets of 60mm or 70mm. Installation is straightforward, requiring only a screwdriver, and most doors can be fitted within an hour. ANSI Grade 3 certification ensures reliable performance, exceeding 200,000 cycles, making them perfect for daily use. Each knob is reversible, compatible with both left and right-handed doors, and packaged separately to prevent scratches during transit. These knobs are built to last, providing a secure and comfortable grip for everyday privacy needs, shipped directly from the USA, with all duties paid, arriving in 11-13 days.