Material :Silver plated metal base Feature:A head pin is a long or short wire with a cap at one end. Jewelry makers use the head pins to stop beads, stones or crystals from falling off at the end of the wire.And they are used to make a variety of jewelry pieces like earrings, bracelets or necklaces,approx 3800pcs Head Pins each 500gram Size:30mm Long,1-2mm Thick