This is an older book. Still valid, but more of a collectors piece. ---- The ability to remove a lock from a door, disassemble the mechanism, and remove the lock cylinder for service is not always a simple straightforward task. The Door Lock Encyclopedia is a clear and concise illustrated service manual illustrating service instructions for standard cylindrical locksets including American Eagle, Arrow, Corbin, Dexter, Harlock, Kwikset, Lori, Master, National Lock/Amerock, Sargent, Schlage, Weiser and Yale. It will equip you with specific knowledge and a few tricks to make servicing understandable, easy to master and profitable. - No Longer Available - (Discontinued When Out)