Designer style and superior security with this Kwikset Signature Series product.Note: Measure your door's backset, cross bore and thickness to ensure you find the right fit. 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 outside and thumb turn inside, Weight: 1.0 Pounds, Manufacturer: Kwikset