Grade 3 security. Adjustable latch (AL), interchangeable for 2-3/8" or 2-3/4" backsets with round corner face and round deadbolt latch. Key retracts bolt from exterior, turn piece operates bolt from interior. SmartKey cylinder eliminates traditional pins and springs. Cylinder design provides instant rekey functionality. SmartKey cylinder is a bump-resistant, higher pick-resistant lock. Included with each lock is the rekeying learning tool that allows the lock to be rekeyed in 3 easy steps. Full lifetime mechanical warranty. 5 year finish warranty.