burglarproof lock cylinder with conputer key burglarproof lock cylinder with conputer keyMaterial: Brass, Zinc Alloy, ... ,90mm,100mmCam : sintered steel ( very hardened ) Key : iron key or brass key 3pcs /set , 5pcs /set Lock core: brass or zinc Sealed bead: brass ... , rhombus button, oval button ans so on. key type:S-groove key (normal key)Computer keyburglarproof lock cylinder,lock core,cylinder lock ...