... .5*9.5mm Surface:GP,NP,CP,AB high security door cylinderhigh security door cylinderMaterial: Brass, Zinc Alloy, Iron, Al, etc. ... ans so on. key way:S-groove key (normal key)Computer keycombination lock parts Surface finishing :Gold plated, chrome plated,nickel plated ... cylinderABantique bronzeRCround cylinderACantique copperHPhalf picks cylinder OCoval cylinder high security door cylinder of door lock