This satin nickel door knob is built with solid all-metal construction for durable everyday use in bedrooms, bathrooms, studies, and other interior spaces. It fits doors from 1-3/8" to 1-3/4" thick and includes an adjustable latch for 2-3/8" to 2-3/4" backsets. The exterior keyed entry and interior thumb-turn provide convenient privacy and controlled access. Its round ball design offers a clean modern look and a comfortable grip. Installation is simple with just a screwdriver.