Our heavy duty weight clasp and rings are made in America from pure, solid, raw, red copper. Get a set of 5 heavy duty copper clasp repair kits. Each sister hook clasp kit comes with one 16mm solid copper sister hook clasp and two 12mm jump-rings, everything you need for finishing heavy copper chains.

Clasp style: sister hook, double hook, swivel hook

Dimensions: 4mm high, 10mm wide, 16mm long

Dimensions: attachment ring 12mm, 8mm opening

Metal: raw solid copper (nickel, cadmium, lead free)

Country of origin: USA

Package contains five clasp kit (15 pieces). Images of jewelry and other items for demonstrative purposes only. Please note that these clasps tend to be stiff in their movement at first.

The large sister hook clasp has two identical hooks that swivel open and closed on a rivet. This clasp and jump ring set is for heavy chain repair and copper jewelry projects. We use it on our heavy and extra heavy duty copper chain designs.