Heart Closures are large lobster claw-style fasteners, which make jewelry removal easy for small hands. Composed of non-ferrous (mixture of non-magnetic) metals, each closure measures 1.125 inches (28.6 mm) from end-to-end. One strand of Bunjee brand bungee craft cord (or any cord 3mm-4mm in thickness) can squeeze into the base. Illustrated assembly instructions are included under the header card.