Classic Hardware Jewelry - Double Hearts Skeleton Key & Keyhole Art Stainless Steel Toggle Clasp Necklace with Original Tattoo Art by Hannah Aitchison. One heart has keyhole artwork and the other has a skeleton key on it. Both designs are encased in scratch resistant resin. Length is 16 inches. Trademarked Classic Hardware on the back of the hearts. Beautiful gift item for yourself or your sweetheart! Classic hardware jewelry is designed to last for years and years!