The very best way to make a nice Jump Ring is to saw it. You are guaranteed a clean square cut with ends that will meet perfectly. You won't be waiting for just the right Jump Ring anymore. This Jump Ring Making Kit helps you make it happen. The Jump Ring Kit has a Jump Ring cutting guide, 28 steel coiling mandrels and an inches to millimetre conversion chart. Use your variable speed drill and a jewelers saw and our Jump Ring Cutting Kit and you can make jump rings with inside diameters ranging from 3/32 to 17/32 in 1/64 increments (2.4 mm to 13 mm in .397 mm increments). You will decide which coiling mandrel you need by finding the size you need on the Jump Ring Sizing chart. The chart will show you what both inside and outside dimensions based on the size and thickness of the wire used. You will be able to make jump rings for Silver, Gold, Copper and many other metals. This Jump Ring Making Kit is easy to use with carbon steel mandrels and a 3D printed Jump Ring Cutting Guide made from plant based biodegradable plastic and has a Laminated Mandrel Sizing Chart. Another product designed and developed by David Lee Smith of SilverSmithingClass.com of Spider Hold Down fame.