These easy to use pliers will give you perfect results when repetitive wire loop-making! Strong enough for making the finishing loops in heavy memory wire. One side of the nose is a three stepped round nose shape, and the other side is a flat shape that has PVC tubing to prevent scratching or marring the wire stock. With just a little practice, you will quickly master the use of these super useful pliers. NOTE: Suitable for wire thicknesses up to 18 Gauge. Can be used with larger wire, but the risk of scratching the wire increases. Measurements: Approximately 6 Inches Long. Smallest diameter step is about 5mm, middle step is about 7mm, and largest is about 10mm.