Product Description As the industry leader, Kwikset has provided trusted security for over 60 years and has become synonymous with security, peace of mind, style and innovation. The largest-selling deadbolt in America, the 600 series provides tough, effective protection at an affordable price. This single cylinder deadbolt can be locked or unlocked by a key on the outside, or the turn button on the inside. SmartKey Re-key Technology allows you to control who has access to your home. Re-key the lock yourself in seconds in 3 easy steps. Have you recently moved or had a child lose a key? Its time to re-key. SmartKey provides the highest level of residential security and features BumpGuard to protect against lock bumping. The crisp, clean appearance of the Satin Nickel finish adds to the overall look of the product and brings a modern feel. Required door thickness- 1 3/8 to 1 3/4 inches. From the Manufacturer As the industry leader, Kwikset has provided trusted security for over 60 years and has become synonymous with security, peace of mind, style and innovation. Tustin's fashionable wave silhouette design is the perfect complement to homes with inspired style. The crisp, clean appearance of the Satin Nickel finish adds to the overall look of the product and brings a modern feel. This privacy knob is best used in interior bed and bath applications where privacy is required. Both knobs/levers are locked or unlocked by turn button inside. The outside knob/lever can be unlocked by an emergency key. KEYED DEADBOLT: Use on doors requiring a high level of security, turn piece interior locking, exterior locking using a key. Recommended for exterior-facing doors SMARTKEY SECURITY: Kwiksets SmartKey Security technology protects against advanced break-in techniques and allows you to re-key your lock yourself in seconds EASY INSTALL: Do it yourself, installs in minutes with just a screwdriver, all the hardware you need is included for a hassle-free installation, detailed directions provided FITS STANDARD DOORS: 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 BOX INCLUDES: Exterior Keyed Deadbolt, Interior Turn Piece, Adjustable Latch, 2 Keys, Screws, Strike Plate, SmartKey Tool, Installation Hardware, Install Guide CERTIFIED TRUSTED QUALITY: Security, Durability and Finish are Grade 3 BHMA certified, designed for reliable protection, providing peace of mind at home 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: Kwiksets door hardware is treated with Microban, this offers powerful product protection that is 99.9% cleaner than an unprotected surface TRADITIONAL DESIGN: Available in a classic, traditional door hardware style with simple, unique details to match your home d?cor