Durable solid stainless knobs with an exterior grade matte black finish that was developed for industrial applications All metal adjustable latch fits doors with 2-3/8 - 2-3/4 (60-70mm) backsets and doors from 1-3/8 to 1-3/4 (35-45mm) thickness Privacy Key Not Included. Privacy knob has a keyless lock set for bedrooms, bathrooms, etc. Exterior privacy release button can be unlocked with a standard screwdriver or coin Each CML door knob is ANSI Grade 3 certified, to show no wear for over 200,000 cycles CML fully backs our products with a complete 5-year replacement that includes the finish and mechanical Reminder: The screws that hold the door knobs to the door come pre-installed in the knob assembly. They must removed before installation