... -free nickel OEM is welcom EyeletProducts:plating eyelet,rivets,jeans button,prong snap button,trouser hook and morethe main material :brass,alloyplating color ... -copper and customized colorssize:21mm,6mm,7mm,8mm,9mm,10mm,11mm,12mm,13mm,14mm,15mm and more customized sizes.Customized color ...