Consumer clear pack. Grade 2 security entry knob with SmartKey cylinder. SmartKey cylinder eliminates traditional pins and springs. Cylinder design provides instant re-key functionality. SmartKey cylinder is a bump-resistant, higher pick-resistant lock. Included with each lock is the re-keying learning tool that allows the lock to be re-keyed in 3 easy steps. Fits all standard doors 1-3/8′ up to 2′. Standard adjustable backset 2-3/8′ – 2-3/4′. Requires 2-1/8 diameter lockset bore hole and a 1′ diameter latch hole. Has an adjustable backset 2-3/8′. Knobs are keyed alike in multiples of 4.