Beadalon Round Jump Ring Mandrel (4,6,7,8mm). The exclusive Beadalon Jump Ring Maker comes in different configurations so you can make just the size you need. Try coiling vivid Artistic Wires into colored Jump Rings to add definition and texture to jewelry designs, or use gold-filled, sterling, or base metal wire to fashion components that complement your designs. Use the Wire Twister to make pre-twisted color combinations, then make twisted Jump Rings for all your jewelry or craft projects. Easy to use, fast, and fun. Once you try making your own Jump Rings you may never want to stop!