TWO (2) Necklace Cords for Pendants - 16" + 2" Extension Chains - Black Silk/Satin AND 2 Pcs of 2" Extension Chains and 2 Pcs of 4" Extension Chains ~ Silver Tone Plated (FB123) Set contains 2 16" silky-satin necklace cords and 2 Pc each 2" and 4" necklace extenders Cords measure 2.5mm in thickness Use cords to hang your favorite pendants.. Clip extenders to your favorite necklace to lengthen it.. Perfect set for the necklace lover!!