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 Deadbolt operated by key on both sides Comes with 2 keys Deadbolt Latch has square corner faceplate ANSI/BHMA grade 2 ce rtified Latch has 2 3/8 in. backset Includes round deadbolt strike 1 inch deadbolt throw Easily installs in minutes with just a screwdriver Lifetime mechanical and finish warranty Microban Antimicrobial product protection keeps door hardware 99.9% cleaner than unprotected surfaces.