Various metal alloys are anodized to increase corrosion resistance, to increase metal hardness and allow dying in order to personalize items. The special dyes that we use in a process developed in Switzerland over a decade ago. The colors or combination of colors are plentiful. Once our process anodizes an item it will become unique and the pattern cannot be duplicated. A number of people like to have a customized matching set made for example (aluminum parts of a handgun, knife, flashlight, pen) providing a unique visual effect.