high security door cylinder length: 60mm,70mm,80mm,90mm euro:33 ... 9.5mm Surface:GP,NP,CP,AB high security door cylinderMaterial: Brass, Zinc Alloy, Iron, Al, etc.Length: 40mm,50mm,60mm, ... 80mm,83mm,90mm Cam : sintered steel ( very hardened ) Key : iron key or brass key ( 3pcs /set , 5pcs /set ) Lock ... bronzeRCround cylinderACantique copperHPhalf picks cylinder OCoval cylinder high security door cylinder