Prong type snap button 1.Material:brass 2.Color:nickel free ... lead free, anti-brass, anti-copper, gun metal 3.Quality:B grade Prong ... nickel free light pewter, nickel free dull-nickel, and more Pearl sizes: 7.8, 9, 10, 10.5, 11, ... 17, 18, 20.8, 23, 25.4, and 30mm Prong sizes: 7.0, 7.2, 7.5, 7.8, ... women's shirts, coats, jackets, and pants Prong type snap button