With options of 2, 3 or 4 inch extenders it couldn't be simpler to get the best fit for your favourite necklaces every time! This sterling silver extender is constructed with a delicate belcher curb and a bolt ring clasp. Clip the open end of the extender to your existing necklace using its fastener and then secure the extender chains bolt ring to the other end. Yellow and rose gold plated versions are also available.