Safety By Design 200-SC Turner Keyless Locking Deadbolt, Satin Chrome, SC-4 Patented keyless locking mechanism--locks with one simple turn Easily re-keyed and simple to install Universal size cylinders with pick-resistant mushroom pins to discourage break-ins Handing is easily changed from default right-hand to left by moving 1 screw Fits standard-sized 1-3/4-to-2-inch thick doors with 2-1/8-inch bore