metal buttons pin Material: tinplate Size: customized Logo :CMYK paper printing Shape: any shape is ok metal buttons pin MaterialTin /tinplateBadge TypePin OnTechnicsCMYK PrintedNickel-Free yesShapeRound, square, heart-shaped, rectangular availableSizesuch as 22mm,25mm,30mm,35mm,40mm,45mm,50mm,55mm,58mm,60mm63mm,65mm,70mm,74mm,76mm,100mm,140mm and so onColoroptional ,according to Panton color ...