... 20mm 4)Plating: gold High quality button badge pin back :- Process:Various depending on the design and customer ... , etc) - Material: Brass, zinc alloy, tin, iron, pewter, aluminum, stainless iron, copper, etc. - Size: 10-100 mm, more ... design - Plating: Gold/ Antique Gold/ Silver/ Antique Silver/ Nickel/ Black Nickel/ Antique Nickel/ Copper/ Antique Copper/ Brass/ Antique Brass/ Dyed Black/ Pearl ...