Snap button 1, Direct Button factoy 2, Plated or Enamelled color 3, Nickel/lead free ... 1. Metal/Snap button material : Zinc alloy, copper, Brass.2. Metal/Snap button size: 14mm, 15mm, 17mm, 20mm, 22mm ... button, zinc alloy button, rivet, buckles, Snap button, Spring snap button, prong snap button, ring snap button, Nail heads ... buckle, alloy snap button, Nynon snap button.... 2013 Spring Snap Button