1.Material:Alloy,Magnetic 2.Size:4mm-12mm 3.Usage:For bracelet or necklace jewelry 4.Colors:gold,silver,ancient Silver,etc. ... :16mm3.Usage:For bracelet or necklace jewelry 4.Colors:gold,silver,ancient Silver,bronze etc.Product Details: Namemagnetic claspsMaterialAlloy+Magnetic ColorsGold,silver ... track the goods you order all the time. Jewelry findings --magnetic clasp