1.Material: H65 Brass 2.Nickle free and lead free 3.Oeko-Tex Standard 100 class 484#, 486# spring snap button nickel free & lead free:Intertek test report material: brass color: nickel nickel free486# spring snap buttonthere are different items:Prong Snap buttons, Spring Snap buttons, Sew-on snap buttons,2 style like cap snap button, cap hole snap button, Pearl snap button, pearl hole snap button ...