Safety By Design 100-AN Turner Keyless Locking Deadbolt, Antique Nickel, KW10 Patented keyless locking mechanism - locks with one simple turn Easily re-keyed and easy to install Universal size cylinders with pick-resistant mushroom pins to discourage break-ins Handing is easily changed from right (default) to left-hand by moving one screw Fits standard-sized doors (1-3/4-to-2-inch thick) with 2-1/8-inch bore