This is a Schlage Style Cylinder with a Weiser E Falcon keyway designed to fit most key-in-knob and key-in-lever cylinders and some deadbolts.  The keyway is the standard WR3/WR5 keyway. The lock is keyed different and sold with 2 cut Weiser WR3 Look-Alike keys and six tailpieces. Satin Chrome Finish. 15995WA-26D-KD.  Lock is pinned for 5 chambers, but drilled for 6.   Includes: 2 Ilco® look alike keys, 3 rigid tailpieces, 1 lazy tailpiece for single deadbolt, 2 different length lazy tailpieces for double deadbolts.