It’s sometimes hard to close the spring clasps on jewellery, but with these 4 screw fasteners (two silver and two gold) now it’s easy! Attach one to each side of your necklace or bracelet with its clasps and just screw closed. It’s simple - no need to ask for help. And they will add several welcome centimetres to chains which are a bit too short. Attach to spring clasp and ring. Made of metal. Length: approx. 4 cm.