Kwikset 91560-029 Halifax Slim Square Keyed Entry Lever Featuring Smartkey Designer style and superior security with this Kwikset Signature Series product. SmartKey Security is compatible with Kwikset (KW1) keyway For use on exterior doors where one sided is keyed entry and security is needed Fully reversible contemporary lever can be installed on both left and right handed doors with an adjustable latch to fit all standard door size Meets ADA/ANSI A117.1 requirements, ensuring accessibility to all disabled persons Alignment post for easy install and strengthened springs to ensure lever doesn't sag over time