PREMIUM MATERIAL: Brushed Nickel door knobs are made of premium quality stainless steel of splendid rust protection and anti-oxidation, finished with electroplating technology for anti-corrosion, which is anti-fingerprint and durable. Conformed with ANSI Grade 3 Exceeds 250,000 cycles and 5 pins brass tumbler cylinder; Solid Column security bolt for anti-sawing protection MODERN DESIGN: Plustool door knobs are available in modern round ball design, no sharp edges, rounded without hurting hands, which is a sophisticated, contemporary door hardware style with simple, unique details to match interior doors for commercial and residential applications. It fits both right handed and left handed doors EASY INSTALLATION: No need for professional door fitters, you just only need a screwdriver to quickly complete the installation! Installation instructions included help you complete it in a flash. All Plustool privacy door locksets are reversible and can be installed left-handed or right-handed. Each of interior door knob set is individually packaged to avoid scratches caused by collisions during transit PRIVACY FUNCTION: The keyless door lock can be locked by twisting the button inside and typically feature an emergency release mechanism on the outside(use a coin or screwdriver). Door knobs interior provides excellent security and privacy and is commonly used in areas such as bathrooms, bedrooms, and any room where privacy is needed ADJUSTABLE LATCH: Brushed Nickel door knob has an adjustable universal latch, 2-3/8"(60mm) or 2-3/4"(70mm). This door knob fits 1-3/8"(35mm) to 1-3/4" (45mm) doors. (Notice: The latch plate is unremovable)