Kwikset featuring SmartKey Phoenix Keyed Entry Knob Satin Nickel 740PE 15 SMT 6AL RCS 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 Universal handing, fits both right handed and left handed doors Fits door thickness of 1-3/8-Inch to 1-3/4-Inch