LOCKING PRIVACY: Use on doors requiring privacy, can be locked inside with a push button and unlocked outside with provided release tool, recommended for bedrooms and bathrooms. Our exclusive design utilizes dual compression springs to keep the lever straight and wobble-free over the lifetime of the handle without the risk of sagging. Do it yourself, installs in minutes with just a screwdriver. Reversible handle for left- or right-handed doors, detailed directions provided. Fits standard size doors 1-3/8" to 1-3/4" thick, adjustable latch backset from 2-3/8" to 2-3/4" with just a twist during installation. Security, Durability and Finish are Grade 1 BHMA certified, designed for the highest level of security and the toughest environments with frequent use. Interior and Exterior Privacy Door Lever, Adjustable Latch, Emergency Unlock Tool, Installation Hardware, Install Guide.