Used in this video turorial:. How to Use a Wire Rounder Tool. . This set from Eurotool® includes a Wood Top Pin Vise and two cup burs. The one and only tool to effectively de-bur the end of a wire after it has been cut! Just what you need if you make your own ear wires or work with a lot of wire in your jewelry. Round Wood Top Pin Vise is more comfortable than the conventional hex head vises. Pin Vise features double-ended chucks from zero to 3.3mm capacity. Measurements: Zero to 3.3mm capacity Pin Vise is 4 inches long. Use the 1.2mm cup bur to file wire thinner than 18 gauge. Use the 1.8mm cup bur to file thicker wire up to 14 gauge. Quantity: 1 Set (Includes 1 Wood Top Pin Vise and 2 Cup Burs) Example photo shows rounded wire on left and wire that has not been rounded on the right.