Package:10 Sets of Alloy Heart-shaped Jewelry Magnetic Clasps Magnetic Clasps Material:alloy Color:silver Size:Approx 16mm in length,11mm in height,6.7mm in thickness,1mm in hole diameter The magnet has a strong suction force,no need to worry about the loss of the necklace/bracelet during the wearing process.Heart-shaped clasp is a magnetic latch, effortless to connect most jewelry clasps. It have two bails where threads or cords or chains can be passed through so that it can be used for necklace connection. Great used for most DIY necklaces,bracelets,jewelry making,easy to connect most chain buckles.