... iron, zinc alloy 2 different surface finished 3 60mm,70mm aluminium shell zinc inside cylinder lock Material: Brass, Zinc Alloy, ... ans so on. key way:S-groove key (normal key)Computer keySurface finishing :Gold plated, chrome plated,nickel plated, polished ... bias cylinderABantique bronzeRCround cylinderACantique copperHPhalf picks cylinder OCoval cylinder aluminium shell zinc inside cylinder lock