Prong snap button 1.Material:brass 2.Color:nickel free lead free, anti-brass, anti-copper, 3.Have Intertek test reports Prong snap buttonMaterial: ... brassColor platings: nickel/nickel free, anti-brass, anti-copper, gun metal, ... , and 30mmApplications: children's garment, men's or women's shirts, coats, jackets, and pants prong snap button