1.EASY INSTALLATION: Install your leverset in a flash. All you need is a door and a tool set! No need for professional door fitters, you can do it yourself! 2.PRIVACY FUNCTION: The door lever can be locked inside and opened outside in emergency WITHOUT keys(use coin or card). Use it for your guest rooms, bedrooms, bathrooms, interior locking doors and other privacy needs. 3.ONE SIZE FITS MOST: This black door lever fits 1-3/8' to 1-3/4' doors; Reversible for both left handed and right handed doors. (Notice: The latch plate is unremovable.) 4.365 DAYS GUARANTEE: The solid zinc alloy and brass, smooth finish, polished appearance and substantial, easy-to-grasp lever will subtly elevate and enhance commercial areas or residences alike. If it does not meet your satisfaction, we will surely help you.