... , 3) Eco-friendly, 4) 100% raw material KC351 Metal Keychain Manufacturer....1) No limited in quantity2) Custoimized size and shape3) Derable ... ,hat clip and so on,which are mainly made of copper,iron,aluminum,zinc alloy,tin as the main material,produced ... engraving,etc...plating colormatt/shiny nickel/black nickel,gold,silver,copper,chrome,bronze,etc..colors for the logoany available color are ...