KEYED ENTRY: Use on doors where extra security is needed, turn piece interior locking, exterior locking using a key. Recommended for exterior-facing doors. SMARTKEY SECURITY: Kwikset's SmartKey Security technology protects against advanced break-in techniques and allows you to re-key your lock yourself in seconds. EASY INSTALL REVERSIBLE LEVER: 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 2 BHMA certified, designed to withstand everyday use and common forced entry break-in methods. BOX INCLUDES: Exterior Keyed Door Lever, Interior Lever, Adjustable Latch, Intallation Hardware, SmartKey Tool, 2 Keys, Install Guide. WARRANTY PROTECTION: Our products are backed by a lifetime mechanical and finish warranty with great customer service, see Kwikset warranty for more details. MICROBAN PROTECTION: Kwikset's door hardware is treated with Microban, this offers powerful product protection that is 99.9% cleaner than an unprotected surface.