1>cylinder lock 2>entrance/privacy/passage/dummy 3>normal/computer key 4>backset 45-50mm 5>finish: PB/SB/AB/SN/CP High quality Euro standard zinc satin nickel and bright nickel finish small plate reversible mortise cylinder lockProduct Information High quality Euro standard zinc satin nickel and bright nickel finish small plate reversible mortise cylinder lockFunctionEntrance/Bathroom/Passage/ ...