Passage knobs turn to open, but do not lock The passage/hall/closet function is freely operational from both sides of the door at all times. Easy Installation The Probrico knobs easily install in minutes with just a screwdriver. Reversible Handed Fits Either Right Hand Or Left Hand Doors SOLID Adjustable Latch and Standard Size Adjustable Backset - 2-3/8 inch or 2-3/4 inch (60mm or 70mm)Fits doors thicknes:1-3/8 inch to 1-3/4 inch (35mm to 45mm) Passage Door Knobs are used on doors in hallways, closets, and other rooms where a key is not necessary. Probrico’s variety of styles and finishes are sure to complement your home's décor. Round Ball Passage Door Knobs Lifetime mechanical and beautiful finish Modern appearance, sturdy and decent quality. Universal handing; fit both right handed and left handed doors. Specifications Package Includes: Outside Knob x 1 Inside Knob x 1 Latch unit x 1 Strike plate x 1 Box strike x 1 Long Screws x 2 Short Screws x 4