kwikset security ALISO lockset, 400AO 15 SMT 6AL RCS K3, satin nickel finish, easy to install, fits standard door prep, exposed screws on the interior knob, smartkey security with bumpguard protection, patented side locking bar technology offers improved security by protecting against lock bumping, an attack technique used to defeat conventional pin & tumbler locks, smartkey security™ re-key technology is compatible with kwikset (kw1) keyway, lifetime mechanical and finish warranty, box pack. #94002-987