Kwikset featuring SmartKey Ashfield Keyed Entry Lever, Iron Black 740ADL 514 SMT 6AL RCS,Kwikset Corporation,97402-578" /> Kwikset Signature Series For use on exterior doors where keyed entry and security is needed Featuring SmartKey re-key technology; re-key the lock yourself in seconds in 3 easy steps Fully reversible lever, fits both right handed and left handed doors Fits door thickness of 1-3/8-Inch to 1-3/4-Inch