... zinc alloy Mortise door lock cylinder DAVID Locks Manufactory CO.,LTDOur Brand: MEGGO, ULTRA, SQIEK, FEELITY, DAVID, GOLDLEAVES AB color high quality lock ... cylinder 70mm MEGGO :Our door lock cylinder are best- ... lock cylinder material : zinc, brass,iron and aluminum Cam : sintered steel ( very hardened )/ 30degreeKey : iron , brass( 3pcs /set , 5pcs /set )with ...