19x26.5x2.5mm SILVER or GOLD plated brass necklace shorteners (0.7x1x0.1").
 
Sold Individually, these necklace shorterners allow you to:
Double a long necklace (32" or longer) and use this clasp to hook the doubled necklace in the back.
Makes a two-strand necklace half as long as the original.
Normally used for "endless" necklaces, but may also be used on some types of necklaces that have a clasp.
Necklace can be twisted before hooking.
 
There is no additional shipping charge if this item is bought and shipped with an existing jewelry or hat order.