This is a Schlage Style Cylinder with a Yale Y78/998GA keyway designed to fit most key-in-knob and key-in-lever cylinders and some deadbolts.  The lock is 0-bitted 6 pin cylinder with all Number 0 bottom pins and 2 uncut Yale Look-Alike keys and six tailpieces. Easily repin the lock and duplicate the keys to match to an existing cut key.  NOTE: This is not a Yale cylinder.  Uses 998GA/Y78 6 pin key. Satin Chrome finish.