Obama Commemorative Metal Pin Button Picture for referenceSize(mm): 25, 30,32,35, 38, 40, 45, 50, 55, 58, 60, 70, 75or as your requestBacking Cards size: 23 cm *11cm or customizedMaterial: Tin badge,plastic badge, magnetic badge is availableShapes:Round, oval, irregular shape (square, heart-shaped) or as your request Processing:Offset..