Square Singapore Lever. Designer style and superior security with this Kwikset Signature Series product For use on exterior doors where keyed entry and security is needed Featuring SmartKey Security, which protects against advanced break-in techniques and allows you to re-key your lock yourself in seconds. SmartKey Security re-key technology is compatible with Kwikset (KW1) keyway or (SC1) keyway options Comes with 2 keys Latch has 2 interchangeable faceplates round corner and square corner Certified Highest Residential Security, Durability and Finish - ANSI/BHMA Grade AAA Latch has adjustable backset 2-3/8" to 2-3/4" to fit all standard door preparations 1/2 in. latch throw Locking mechanism functions with turn piece on the interior of the lock Fully reversible lever, can be installed on both right handed and left handed doors.