Fashion Jewelry Snap Silver tone Necklace Toggle Clasp Fit snap ginger buttons Chain necklace fit 1pc snap ginger buttons lobster clasp Size: 17.5''inches. Thickness: 5mm The wide of chain: 3mm - The Size of Lobster Clasp:21mm x7mm - 14mm Material: Alloy (Cadmium free) Button Fastener size: 5.5mm