Vintaj 40-Piece Nail Head Rivets for Jewelry, 1/4-Inch 100-Percent Natural Brass Not antique plated, Nickel-free, Lead-free compliant Made in the USA 1/8-Inch rivets are for two flat, thin layered pcs; 1/4in rivets are for simple layered pcs; 1/2in rivets are for multi stacked layers