EASY INSTALLATION: The front door lock set is easy for DIYers to install with guaranteed fit on standard pre-drilled doors. All you need is a screwdriver. Just remind please compare PRODUCT SIZE carefully with the pre-drilled holes on your door, to avoid inconvenience. FIT MOST STANDARD DOORS: The door handle sets fit most standard-sized doors ranging from 1-3/8 inch to 1-3/4 inch in thickness. Besides, the door handleset featuring 2-3/8 inch or 2-3/4 inch adjustable latch to fit all standard door preparations, as well as compatibility with both right handed and left handed doors. SECURITY & DURABILITY: The front door handle lock comes with a single cylinder deadbolt that can be opened by an exterior key, and have a secure lock inside, which provides reliable safety for your home. Secure Locking Mechanism + Heavy Duty Zinc Alloy Material combo will provide maximum security. Thanks to the ANSI Grade 3 standard, the door handle sets is enough to withstand the wear and tear of daily use. WHAT'S IN THE BOX: 1 Handle & Lever Set, 1 Deadbolt Set, 2 Latches, 2 Strike Plates, 2 Strike Boxes, Keys, Screws Kit, Installation Instruction. This door handle and lock set fits most decoration styles, and suitable for both commercial and residential applications, anywhere keyed entry and security is needed.