SAFETY & PRIVACY: The Privacy door handles can be locked from the inside without keys, with a safety release function on the other side. Simply turn the turn button to lock and unlock the door from the inside. Privacy door handles are suitable for interior doors, such as bedroom and bathroom, anywhere privacy is required. Opened outside in emergency WITHOUT keys. STURDY & DURABLE: The sturdy construction of these door knobs allow them to be solid, strong and durable. Stainless Steel Material can resist corrosion and use for years to come. Thanks to the ANSI Grade 3 standard, the entry door locks set is enough to withstand the wear and tear of daily use. The Satin Nickel finish adds an elegant touch to your home or office. INSTALLATION: These door knobs come with fitting instructions and templates for easy installation. Supplied with all fixtures and accessories. This knobs set can be used for left or right handed doors. APPLICATION: These door locks can be used on internal doors of a 35mm-45mm thickness. The adjustable latch is adjustable to either 60mm (Distance from hole center to door edge) to fit all standard door preparations. They are suitable for both commercial and domestic applications.