Ideal for metal stamping Washer shape 25mm Designed for pendants or charms Supplied in a pack of 4 Made from copper Copper is an ideal material for metal stamping, base metal jewellery making and enamelling projects. These premium quality, ImpressArt copper washer stamping blanks measure approximately 25mm in diameter , with a 13mm central hole, and have a sturdy 1mm thickness. To maximise the shine on these copper blanks they can be put into a tumbler to bring them to a polished finish. These copper washer stamping blanks make great pendants, charms or key rings. Supplied in a pack of 4.