They have regular butterfly clasps to fasten them to the earlobe when worn

where it also has a short extension chain (with a small

The item inside can be a ring

It fastens at the back with a small round spring clasp

The shorter chain is unadorned and sits higher on the chest than the longer chain

Necklace Extension Sterling Silver nostalgia They have regular butterfly claspsThis is a sterling silver necklace extension that measures 10. 5 cm in total. Simply use its round spring clasp to attach it to your necklace, and choose between three different extension possibilities: 3. 5 cm, 7. 0 cm, and 10. 5 cm. A great addition to any jewelry collection, this necklace extension would also make a very thoughtful and practical gift.