Beadalon 20 Gauge Round Tip Wire Bead Reamer Battery Operated. Now filing cable ends is as simple as pressing a button! Use this bead reamer to quickly and easily round off the ends of wire wrapping cords. Use it to file handmade ear wires and finish the ends of wire-wrapped designs for an ultra-smooth finish. This 4-1/2x1-7/8-inch package contains a bead reamer for 16-18 gauge wire. Imported.