Passage Function: This matte black door knob is designed without a lock, ensuring continuous access while also providing occasional quietness. It is ideal for doors in areas like closets, hallways, and meeting or conference rooms where unrestricted entry is needed Easy Installation: The black closet door knobs are easy to install. Just follow the detailed installation instruction, you can install your closet door knobs in a flash. All you need is a screwdriver and a patient heart Classic Design: Smooth touch, featuring a perfect black finish to create a modern style for your home. The sleek black door knobs have a round ball design that makes it more comfortable to turn Quality Material: The black door knob is made of high-grade stainless steel, anti rust, easy to clean, can be used for many years. The sturdy and solid inside door lock exceeds 250,000 cycles with ANSI Grade 3 verification Detailed Dimensions: Adjustable latch 2-3/8”(60mm) or 2-3/4”(70mm). Fit standard door thickness of 1-3/8” to 1-3/4”(35-45mm) 1