1) Material & process: Zinc alloy (die-casting, stamping) 2) Size: 60mm etc (custom size is accepted) 3) high quality Security police special forces badge : MaterialZinc alloy, brass, copper, iron, pewter, stainless steel, etc.TechniqueDie-casting, engraved, painted, silk screen, offset printing, etc.PlatingGold, silver, nickel, brass, copper, antique plating, misty plating, daul plating, etc. ...