burglarproof lock cylinder with conputer key burglarproof lock cylinder with conputer keyMaterial: Brass, Zinc Alloy, Iron, Al, etc.Length: 40mm,50mm,60mm,70mm,80mm,83mm,90mm,100mmCam ... , rhombus button, oval button ans so on. key type:S-groove key (normal key)Computer keyburglarproof lock cylinder,lock core,cylinder lock--- Surface finishing :Gold plated, chrome plated ...