Signature Series Lido Entry Lever Grade 2 security entry lever with SmartKey cylinder. Lever is reversible for right or left hand doors. 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. Levers are keyed alike in multiples of 4. Finish Polished Brass, Style Lido, Backset 2-3/8 In. or 2-3/4 In., Mounting Nonhanded, Exterior Access Key, Keyway SmartKey, Pkg Qty 1, Package Type Clamshell