... Medal 1,Material: Zinc alloy,Brass,Iron 2,Size:50*50*6mm 3,Logo: Engraving with colours. 4,Weclome OEM Metal Coin ... free,EN71 and Eco-friendly.3.material: iron, copper, alloy, aluminium, tin etc4.technics: enamal, soft enamal,painted, epoxy, print, sand-blasting ...