Probrico Matte Black Passage Door Knobs Designed for doors inside the house; offers reliable closure but without a locking feature, making it a common choice for a room that doesn’t require privacy, such as a closet, hallway, or pantry.Classic colonial knob with matte black finish, perfect enhancement for traditional and compentory homes. Probrico Door Knobs Features: Strong Knob The ball head is made of high density, strong tensile strength and less impurities materials, and is more in line with the requirements of electroplating;The electroplating quality is more stable, it can stably pass the surface quality salt spray test standard 72H, and it is not easy to corrode and fade. Full inner Door Knob Full inner ball, the riveting position of the inner ball is longer, the firmness is stable, the ball head is not easy to skew and loosen Thick and Firm Latch The thickness of the tongue plate material is 2.0mm, which can effectively enhance the strength of the crash door and prolong the service life.It ensures that the door is mute and can also be impact-resistant, so you are not afraid of slamming the door. Sturdy Internal Structure The material is 65 manganese steel, the manganese content reaches 0.9%；The wear resistance is strong and relatively stable, and it can pass the three-level standard 250,000 wear resistance tests. Easy Intallation Package Includes: Selected Door Knobs, Solid Latch, Screws, Installation Instructions and all the mounting hardware needed. (We additionally provide a spare long screw). Easily to Install.Easy installation makes for a one-person project Reversible Levers Universal/reversible operation knobs, suitable for right-hand and left-hand doors; Comfortable Touch Designed round ball handle, no sharp edges, and will offer a comfortable grip Adjustable Backset Latch has adjustable backset 2-3/8" to 2-3/4" to fit all standard door preparations:Fits doors thickness:1-3/8 inch to 1-3/4 inch (35mm to 45mm);