They're easy to use, and give you perfect results when repetitive wire loop-making, and they are 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 concave shape that bends your wire in a perfect half-circle around the 'nose'. Simply move the pliers one or two more times around, and you will have a complete circle. Then use these pliers to gently yet securely grip your loop in one of your hands, while you use your other hand and some chain nose pliers to wrap the end of your wire around the base of the loop. Because these sturdy pliers do the actual pressing on the wire, you can loop tough memory wire with a couple of firm squeezes. With just a little practice, you will quickly master the use of these fantastic pliers, and I know you will love them.