... expoy plateBackside: Tinplate + pin or plastic + pin or PCB board +pinRound shape Size Diameter 20mm, 25mm, 30mm, 32mm, 35mm, 38mm, ... , 80mm, 90mm, 100mm, 130mm, 150mm.Square Shape Size 25mm x 25mm, 40mm x 40mm, 50mm x 50mm, 55mm x 55mmRectangular ... solid pantone color , full color printingAccessorysafety pin, flat needle. plastic clip, button pinPacking 1pc/polybag. 100 pcs/big bag, 1000pcs/carton, ...