Sterling Silver Earring Studs for Half Drilled Pearls and Beads - Fancy Cup (10 Pairs - 20 Pcs) Quantity: 20 pieces (10 Pairs) Style: cup earring studs for half drilled pearls or beads Material: 925 sterling silver Measurements: Overall length is 14mm, the portion that goes through your ear is 9mm long. The cups are 4mm wide and the part that goes through the pearl or bead is about 3mm long.