All Charms are supplied with a jump ring (as shown) to attach to your Bracelet or Necklace. You can add our 925 Sterling Silver Curb Necklaces from the drop down lists on each item, and they are available in 14" (35.5.cm), 16" (40.5cm) or 18" (45.5cm) lengths - with 20" (51cm) to be added soon. The smaller sizes are ideal for children!